STATES AND TERRITORIES OF THE UNITED

In this post we will looking at Illinois and its territories, Its past and present governors and current House of representative’s members.

INTRODUCTION.

is a state in the Midwestern United States. Chicago is its largest city, and the state’s capital is Springfield; other major metropolitan areas include Metro East (of Greater St. Louis), Peoria and Rockford. Of the fifty U.S. states, Illinois has the fifth largest gross domestic product (GDP), the sixth largest population, and the 25th largest land area. With Chicago in the northeast, small industrial cities and immense farmland in the north and center, and natural resources such as coal, timber, and petroleum in the south, Illinois has a highly diverse economy. Owing to its central location and geography, the state is a major transportation hub: the Port of Chicago enjoys access to the Atlantic Ocean through the Great Lakes and Saint Lawrence Seaway, and to the Gulf of Mexico from the Mississippi River via the Illinois Waterway. Additionally, the Mississippi, Ohio, and Wabash rivers form parts of the state’s boundaries. Chicago’s O’Hare International Airport has been among the world’s ten busiest airports for decades. Described as a microcosm of the entire United States, Illinois has long been considered a bellwether in social, cultural, and political terms. What is now Illinois was inhabited for thousands of years by various indigenous cultures, including the advanced civilization centered in the Cahokia region. The French were the first Europeans to arrive, settling near the Mississippi River in the 17th century, in the region they called Illinois Country, part of the sprawling colony of New France. Following U.S. independence in 1783, American settlers began arriving from Kentucky via the Ohio River, and the population grew from south to north. Illinois was part of the United States’ oldest territory, the Northwest Territory, and in 1818 it achieved statehood. The Erie Canal brought increased commercial activity in the Great Lakes, and the small settlement of Chicago became one of the fastest growing cities in the world, benefiting from its location as one of the few natural harbors in south-western Lake Michigan. The invention of the self-scouring steel plow by Illinoian John Deere turned the state’s rich prairie into some of the world’s most productive and valuable farmland, attracting immigrant farmers from Germany and Sweden. In the mid-19th century, the Illinois and Michigan Canal and a sprawling railroad network greatly facilitated trade, commerce, and settlement, making the state a transportation hub for the nation. By 1900, the growth of industrial jobs in the northern cities, and coal mining in the central and southern areas, attracted immigrants from Eastern and Southern Europe. As one of America’s most industrialized states, Illinois is a manufacturing center, which was especially important during both of the 20th century´s world wars. The Great Migration from the South established a large community of African Americans in the state, particularly Chicago, who founded the city’s famous jazz and blues cultures. Chicago, which became one of the country’s leading cultural, economic, and population centers, is a global city; its metropolitan area of Chicagoland encompasses about 65% of the state’s population. Three U.S. presidents have been elected while living in Illinois: Abraham Lincoln, Ulysses S. Grant, and Barack Obama; additionally, Ronald Reagan, whose political career was based in California, was born and raised in the state. Today, Illinois honors Lincoln with its official state slogan Land of Lincoln, which has been displayed on its license plates since 1954. The state is the site of the Abraham Lincoln Presidential Library and Museum in Springfield and the future home of the Barack Obama Presidential Center in Chicago.

ILLINOIS TERRITORIES.

Illinois has three major geographical divisions. Northern Illinois is dominated by Chicago metropolitan area, or Chicagoland, which is the city of Chicago and its suburbs, and the adjoining exurban area into which the metropolis is expanding. As defined by the federal government, the Chicago metro area includes several counties in Illinois, Indiana, and Wisconsin, and has a population of over 9.8 million. Chicago itself is a cosmopolitan city, densely populated, industrialized, the transportation hub of the nation, and settled by a wide variety of ethnic groups. The city of Rockford, Illinois’s third-largest city and center of the state’s fourth largest metropolitan area, sits along Interstates 39 and 90 some 75 mi (121 km) northwest of Chicago. The Quad Cities region, located along the Mississippi River in northern Illinois, had a population of 381,342 in 2011. The midsection of Illinois is the second major division, called Central Illinois. Historically prairie, it is now mainly agricultural and known as the Heart of Illinois. It is characterized by small towns and medium–small cities. The western section (west of the Illinois River) was originally part of the Military Tract of 1812 and forms the conspicuous western bulge of the state. Agriculture, particularly corn and soybeans, as well as educational institutions and manufacturing centers, figure prominently in Central Illinois. Cities include Peoria; Springfield, the state capital; Quincy; Decatur; Bloomington-Normal; and Champaign-Urbana. The third division is Southern Illinois, comprising the area south of U.S. Route 50, including Little Egypt, near the juncture of the Mississippi River and Ohio River. Southern Illinois is the site of the ancient city of Cahokia, as well as the site of the first state capital at Kaskaskia, which today is separated from the rest of the state by the Mississippi River.[ This region has a somewhat warmer winter climate, different variety of crops (including some cotton farming in the past), more rugged topography (due to the area remaining unglaciated during the Illinoian Stage, unlike most of the rest of the state), as well as small-scale oil deposits and coal mining. The Illinois suburbs of St. Louis, such as East St. Louis, are located in this region, and collectively, they are known as the Metro-East. The other somewhat significant concentration of population in Southern Illinois is the Carbondale-Marion-Herrin, Illinois Combined Statistical Area centered on Carbondale and Marion, a two-county area that is home to 123,272 residents. A portion of southeastern Illinois is part of the extended Evansville, Indiana, Metro Area, locally referred to as the Tri-State with Indiana and Kentucky. Seven Illinois counties are in the area. In addition to these three, largely latitudinally defined divisions, all of the region outside the Chicagoland area is often called “downstate” Illinois. This term is flexible, but is generally meant to mean everything outside the influence of the Chicago area. Thus, some cities in Northern Illinois, such as DeKalb, which is west of Chicago, and Rockford—which is actually north of Chicago—are sometimes incorrectly considered to be ‘downstate’

LIST OF GOVERNORS AND HOUSE OF REPRESENTATIVE’S MEMBERS.

Since becoming a state in 1818, 43 people have served as governor of Illinois; before statehood, it had only 1 territorial governor, Ninian Edwards. The longest-serving governor was James R. Thompson, who was elected to four terms lasting 14 years, from 1977 to 1991. Only one governor, Richard J. Oglesby, has served multiple separate terms, having been elected in 1864, 1872, and 1884.

Governor of the Territory of Illinois
Portrait Governor Term in office Appointed by
  Ninian Edwards
    March 17, 1775 – July 20, 1833   
(aged 58)
March 1, 1809

October 6, 1818
Thomas Jefferson

Governors of the State of Illinois

Illinois was admitted to the Union on December 3, 1818, consisting of the southern portion of Illinois Territory; the remainder was assigned to Michigan Territory.The first Illinois Constitution, ratified in 1818, provided that a governor be elected every 4 years for a term starting on the first Monday in the December following an election. The constitution of 1848 moved the start of the term to the second Monday in January starting in 1849, thus shortening the term won in the 1844 election to 2 years. Governors were not allowed to succeed themselves until the 1870 constitution, which removed this limit.

Governors of the State of Illinois  
No.[a] Governor Term in office Party Election Lt. Governor[b][c]  
1     Shadrach Bond
    November 30, 1773 – April 12, 1832   
(aged 58)
October 6, 1818

December 5, 1822
(term limited)
Independent 1818   Pierre Menard  
2   Edward Coles
    December 15, 1786 – July 7, 1868   
(aged 81)
December 5, 1822

December 6, 1826
(term limited)
Independent 1822 Adolphus Hubbard  
3     Ninian Edwards
    March 17, 1775 – July 20, 1833   
(aged 58)
December 6, 1826

December 6, 1830
(term limited)
Adams-Clay
Republican
1826   William Kinney  
4     John Reynolds
    February 26, 1788 – May 8, 1865   
(aged 77)
December 6, 1830

November 17, 1834
(resigned)[d]
National Republican 1830   Zadok Casey
(resigned March 1, 1833)
 
William Lee D. Ewing
(acting)
 
5     William Lee D. Ewing
    August 31, 1795 – March 25, 1846   
(aged 50)
November 17, 1834

December 3, 1834
(successor took office)
Democratic Lieutenant
Governor
acting as
Governor
Vacant  
6     Joseph Duncan
    February 22, 1794 – January 15, 1844   
(aged 49)
December 3, 1834

December 7, 1838
(term limited)
Whig 1834   Alexander M. Jenkins[e]
(resigned December 9, 1836)
 
William H. Davidson[e]
(acting)
 
7     Thomas Carlin
    July 18, 1789 – February 14, 1852   
(aged 62)
December 7, 1838

December 8, 1842
(term limited)
Democratic 1838 Stinson Anderson  
8   Thomas Ford
    December 5, 1800 – November 3, 1850   
(aged 49)
December 8, 1842

December 9, 1846
(term limited)
Democratic 1842 John Moore  
9   Augustus C. French
    August 2, 1808 – September 4, 1864   
(aged 56)
December 9, 1846

January 10, 1853
(term limited)
Democratic 1846[f] Joseph Wells  
1848 William McMurtry  
10   Joel Aldrich Matteson
    August 8, 1808 – January 31, 1873   
(aged 64)
January 10, 1853

January 12, 1857
(term limited)
Democratic 1852 Gustav Koerner  
11     William Henry Bissell
    April 25, 1811 – March 18, 1860   
(aged 48)
January 12, 1857

March 18, 1860
(died in office)
Republican 1856   John Wood  
12   John Wood
    December 20, 1798 – June 4, 1880   
(aged 81)
March 18, 1860

January 14, 1861
(not candidate for election)
Republican Lieutenant
Governor
acting as
Governor
  Thomas Marshall[e]
(acting)
 
13   Richard Yates
    January 18, 1815 – November 27, 1873   
(aged 58)
January 14, 1861

January 16, 1865
(term limited)
Republican 1860   Francis Hoffmann  
14   Richard J. Oglesby
    July 25, 1824 – April 24, 1899   
(aged 74)
January 16, 1865

January 11, 1869
(term limited)
Republican 1864 William Bross  
15   John M. Palmer
    September 13, 1817 – September 25, 1900   
(aged 83)
January 11, 1869

January 13, 1873
(not candidate for election)
Republican 1868 John Dougherty  
14   Richard J. Oglesby
    July 25, 1824 – April 24, 1899   
(aged 74)
January 13, 1873

January 23, 1873
(resigned)[g]
Republican 1872 John Lourie Beveridge  
16   John Lourie Beveridge
    July 6, 1824 – May 3, 1910   
(aged 85)
January 23, 1873

January 8, 1877
(not candidate for election)
Republican Lieutenant
Governor
acting as
Governor
John Early
(acting)
(term ended January 8, 1875)
 
  Archibald A. Glenn[e]
(acting)
 
17   Shelby Moore Cullom
    November 22, 1829 – January 28, 1914   
(aged 84)
January 8, 1877

February 5, 1883
(resigned)[h]
Republican 1876   Andrew Shuman  
1880 John Marshall Hamilton  
18   John Marshall Hamilton
    May 28, 1847 – September 22, 1905   
(aged 58)
February 5, 1883

January 30, 1885
(not candidate for election)
Republican Lieutenant
Governor
acting as
Governor
William J. Campbell
(acting)
 
14   Richard J. Oglesby
    July 25, 1824 – April 24, 1899   
(aged 74)
January 30, 1885

January 14, 1889
(not candidate for election)
Republican 1884 John C. Smith  
19   Joseph W. Fifer
    October 28, 1840 – August 6, 1938   
(aged 97)
January 14, 1889

January 10, 1893
(lost election)
Republican 1888 Lyman Beecher Ray  
20     John Peter Altgeld
    December 30, 1847 – March 12, 1902   
(aged 54)
January 10, 1893

January 11, 1897
(lost election)
Democratic 1892   Joseph B. Gill  
21     John Riley Tanner
    April 4, 1844 – May 23, 1901   
(aged 57)
January 11, 1897

January 14, 1901
(not candidate for election)
Republican 1896   William Northcott  
22   Richard Yates Jr.
    December 12, 1860 – April 11, 1936   
(aged 75)
January 14, 1901

January 9, 1905
(not candidate for election)
Republican 1900  
23   Charles S. Deneen
    May 4, 1863 – February 5, 1940   
(aged 69)
January 9, 1905

February 3, 1913
(lost election)
Republican 1904 Lawrence Yates Sherman  
1908 John G. Oglesby  
24     Edward Fitzsimmons Dunne
    October 12, 1853 – May 24, 1937   
(aged 83)
February 3, 1913

January 8, 1917
(lost election)
Democratic 1912   Barratt O’Hara  
25     Frank Orren Lowden
    January 26, 1861 – March 20, 1943   
(aged 82)
January 8, 1917

January 10, 1921
(not candidate for election)
Republican 1916   John G. Oglesby  
26   Len Small
    June 16, 1862 – May 17, 1936   
(aged 73)
January 10, 1921

January 14, 1929
(not candidate for election)
Republican 1920 Fred E. Sterling  
1924  
27   Louis Lincoln Emmerson
    December 27, 1863 – February 4, 1941   
(aged 77)
January 14, 1929

January 9, 1933
(not candidate for election)
Republican 1928  
28     Henry Horner
    November 30, 1878 – October 6, 1940   
(aged 61)
January 9, 1933

October 6, 1940
(died in office)
Democratic 1932   Thomas Donovan  
1936 John Henry Stelle  
29   John Henry Stelle
    August 10, 1891 – July 5, 1962   
(aged 70)
October 6, 1940

January 13, 1941
(not candidate for election)
Democratic Lieutenant
Governor
acting as
Governor
Vacant  
30     Dwight H. Green
    January 9, 1897 – February 20, 1958   
(aged 61)
January 13, 1941

January 10, 1949
(lost election)
Republican 1940   Hugh W. Cross  
1944  
31     Adlai Stevenson II
    February 5, 1900 – July 14, 1965   
(aged 65)
January 10, 1949

January 12, 1953
(not candidate for election)
Democratic 1948   Sherwood Dixon  
32     William Stratton
    February 26, 1914 – March 2, 2001   
(aged 87)
January 12, 1953

January 9, 1961
(lost election)
Republican 1952   John William Chapman  
1956  
33     Otto Kerner Jr.
    August 15, 1908 – May 9, 1976   
(aged 67)
January 9, 1961

May 21, 1968
(resigned)[i]
Democratic 1960   Samuel H. Shapiro  
1964  
34   Samuel H. Shapiro
    April 25, 1907 – March 16, 1987   
(aged 79)
May 21, 1968

January 13, 1969
Democratic Lieutenant
Governor
acting as
Governor
Vacant  
35     Richard B. Ogilvie
    February 22, 1923 – May 10, 1988   
(aged 65)
January 13, 1969

January 8, 1973
(lost election)
Republican 1968   Paul Simon[e]  
36     Dan Walker
    August 6, 1922 – April 29, 2015   
(aged 92)
January 8, 1973

January 10, 1977
(not candidate for election)
Democratic 1972 Neil Hartigan  
37     James R. Thompson
    May 8, 1936 – August 14, 2020   
(aged 84)
January 10, 1977

January 14, 1991
(not candidate for election)
Republican 1976[j]   Dave O’Neal
(resigned July 31, 1981)
 
1978  
Vacant  
1982   George Ryan  
1986  
38   Jim Edgar
    July 22, 1946 (age 75)
January 14, 1991

January 11, 1999
(not candidate for election)
Republican 1990 Bob Kustra
(resigned July 1, 1998)
 
1994  
Vacant  
39   George Ryan
    February 24, 1934 (age 88)
January 11, 1999

January 13, 2003
(not candidate for election)
Republican 1998   Corinne Wood  
40     Rod Blagojevich
    December 10, 1956 (age 65)
January 13, 2003

January 29, 2009
(impeached and removed)[k]
Democratic 2002   Pat Quinn  
2006  
41   Pat Quinn
    December 16, 1948 (age 73)
January 29, 2009

January 12, 2015
(lost election)
Democratic Succeeded from
Lieutenant
Governor
Vacant  
2010   Sheila Simon  
42     Bruce Rauner
    February 18, 1956 (age 66)
January 12, 2015

January 14, 2019
(lost election)
Republican 2014   Evelyn Sanguinetti  
43     J. B. Pritzker
    January 19, 1965 (age 57)
January 14, 2019

Incumbent[l]
Democratic 2018   Juliana Stratton  

MEMBERS OF REPRESENTATIVES TO THE U.S. HOUSE FROM ILLINOIS

The following is an alphabetical list of members of the United States House of Representatives from the state of Illinois. For chronological tables of members of both houses of the United States Congress from the state (through the present day), see United States congressional delegations from Illinois. The list of names should be complete as of January 3, 2019, but other data may be incomplete. Illinois became the 21st state on December 3, 1818.

LIST OF MEMBERS AND DELEGATES

Member / Delegate Party District Years Electoral history
J. Leroy Adair Democratic 15th March 4, 1933 – January 3, 1937  
George E. Adams Republican 4th March 4, 1883 – March 4, 1891  
Charles Adkins Republican 19th March 4, 1925 – March 4, 1933  
J. Frank Aldrich Republican 1st March 4, 1893 – March 4, 1897  
William Aldrich Republican 1st March 4, 1877 – March 4, 1883  
James C. Allen Democratic 7th March 4, 1853 – July 18, 1856 House declared not entitled to seat
November 4, 1856 – March 4, 1857 Re-elected to fill own vacancy
At-large March 4, 1863 – March 4, 1865  
John Clayton Allen Republican 14th March 4, 1925 – March 4, 1933  
Leo E. Allen Republican 13th March 4, 1933 – January 3, 1949  
16th January 3, 1949 – January 3, 1961  
William J. Allen Democratic 9th June 2, 1862 – March 4, 1863  
13th March 4, 1863 – March 4, 1865  
Willis Allen Democratic 2nd March 4, 1851 – March 4, 1853  
9th March 4, 1853 – March 4, 1855  
George A. Anderson Democratic 12th March 4, 1887 – March 4, 1889  
John B. Anderson Republican 16th January 3, 1961 – January 3, 1981  
William B. Anderson Independent 19th March 4, 1875 – March 4, 1877  
Frank Annunzio Democratic 7th January 3, 1965 – January 3, 1973  
11th January 3, 1973 – January 3, 1993  
Leslie C. Arends Republican 17th January 3, 1935 – January 3, 1973  
15th January 3, 1973 – December 31, 1974 Resigned
Isaac N. Arnold Republican 2nd March 4, 1861 – March 4, 1863  
1st March 4, 1863 – March 4, 1865  
Laurence F. Arnold Democratic 23rd January 3, 1937 – January 3, 1943  
William W. Arnold Democratic 23rd March 4, 1923 – September 16, 1935 Resigned to become a member of the US Board of Tax Appeals
John C. Bagby Democratic 10th March 4, 1875 – March 4, 1877 [data unknown/missing]
Edward D. Baker Whig 7th March 4, 1845 – January 15, 1847 Resigned after being commissioned colonel of the 4th Regiment of the Illinois Volunteer Infantry
6th March 4, 1849 – March 4, 1851  
Jehu Baker Republican 12th March 4, 1865 – March 4, 1869  
18th March 4, 1887 – March 4, 1889  
Democratic 21st March 4, 1897 – March 4, 1899  
William N. Baltz Democratic 22nd March 4, 1913 – March 4, 1915  
Hiram Barber Jr. Republican 3rd March 4, 1879 – March 4, 1881  
James M. Barnes Democratic 20th January 3, 1939 – January 3, 1943  
Granville Barrere Republican 9th March 4, 1873 – March 4, 1875  
Harry P. Beam Democratic 4th March 4, 1931 – December 6, 1942 Resigned after being elected judge of the Municipal Court of Chicago
Melissa Bean Democratic 8th January 3, 2005 – January 3, 2011  
Hugh R. Belknap Republican 3rd December 27, 1895 – March 4, 1899 Won contested election
John Lourie Beveridge Republican At-large November 7, 1871 – January 4, 1873 Resigned to become Lieutenant Governor
Judy Biggert Republican 13th January 3, 1999 – January 3, 2013  
C. W. Bishop Republican 25th January 3, 1941 – January 3, 1949  
26th January 3, 1949 – January 3, 1953  
25th January 3, 1953 – January 3, 1955  
William H. Bissell Democratic 1st March 4, 1849 – March 4, 1853  
Independent Democratic 8th March 4, 1853 – March 4, 1855  
John C. Black Democratic At-large March 4, 1893 – January 12, 1895 Resigned to become U.S. Attorney
Rod R. Blagojevich Democratic 5th January 3, 1997 – January 3, 2003  
Shadrack Bond Democratic-Republican Territory December 3, 1812 – August 2, 1813  
Charles M. Borchers Democratic 19th March 4, 1913 – March 4, 1915  
Mike Bost Republican 12th January 3, 2015 – Present Incumbent
Henry S. Boutell Republican 6th November 23, 1897 – March 4, 1903  
9th March 4, 1903 – March 4, 1911  
James B. Bowler Democratic 7th July 7, 1953 – July 18, 1957 Died
Thomas A. Boyd Republican 9th March 4, 1877 – March 4, 1881  
Lewis L. Boyer Democratic 15th January 3, 1937 – January 3, 1939  
Charles A. Boyle Democratic 12th January 3, 1955 – November 4, 1959 Died
Martin A. Brennan Democratic At-large March 4, 1933 – January 3, 1937  
Lorenzo Brentano Republican 3rd March 4, 1877 – March 4, 1879  
Frederick A. Britten Republican 9th March 4, 1913 – January 3, 1935  
Henry P.H. Bromwell Republican 7th March 4, 1865 – March 4, 1869  
Edwin B. Brooks Republican 23rd March 4, 1919 – March 4, 1923  
Terry L. Bruce Democratic 19th January 3, 1985 – January 3, 1993  
Frank Buchanan Democratic 7th March 4, 1911 – March 4, 1917  
John T. Buckbee Republican 12th March 4, 1927 – April 23, 1936 Died
James R. Buckley Democratic 6th March 4, 1923 – March 4, 1925  
James V. Buckley Democratic 4th January 3, 1949 – January 3, 1951  
Horatio C. Burchard Republican 3rd December 6, 1869 – March 4, 1873  
5th March 4, 1873 – March 4, 1879  
Albert G. Burr Democratic 10th March 4, 1867 – March 4, 1871  
Orlando Burrell Republican 20th March 4, 1895 – March 4, 1897  
Fred E. Busbey Republican 3rd January 3, 1943 – January 3, 1945  
Samuel T. Busey Democratic 15th March 4, 1891 – March 4, 1893  
Cheri Bustos Democratic 17th January 3, 2013 – Present Incumbent
Emmet F. Byrne Republican 3rd January 3, 1957 – January 3, 1959  
Benjamin T. Cable Democratic 11th March 4, 1891 – March 4, 1893  
Ben F. Caldwell Democratic 17th March 4, 1899 – March 4, 1903  
21st March 4, 1903 – March 4, 1905  
March 4, 1907 – March 4, 1909  
Alexander Campbell Independent 7th March 4, 1875 – March 4, 1877  
James R. Campbell Democratic 20th March 4, 1897 – March 4, 1899  
Thompson Campbell Democratic 6th March 4, 1851 – March 4, 1853  
Joseph G. Cannon Republican 14th March 4, 1873 – March 4, 1883  
15th March 4, 1883 – March 4, 1891
March 4, 1893 – March 4, 1895  
12th March 4, 1895 – March 4, 1903
18th March 4, 1903 – March 4, 1913
March 4, 1915 – March 4, 1923  
Cliffard D. Carlson Republican 15th April 4, 1972 – January 3, 1973  
Zadok Casey Jacksonian 2nd March 4, 1833 – March 4, 1837  
Democratic March 4, 1837 – March 4, 1841  
Independent Democratic March 4, 1841 – March 4, 1843  
Sean Casten Democratic 6th January 3, 2019 – Present Incumbent
Bernard G. Caulfield Democratic 1st February 1, 1875 – March 4, 1877  
Edwin V. Champion Democratic At-large January 3, 1937 – January 3, 1939  
Pleasant T. Chapman Republican 24th March 4, 1905 – March 4, 1911  
Chester A. Chesney Democratic 11th January 3, 1949 – January 3, 1951  
Robert A. Childs Republican 8th March 4, 1893 – March 4, 1895  
Carl R. Chindblom Republican 10th March 4, 1919 – March 4, 1933  
Burnett M. Chiperfield Republican At-large March 4, 1915 – March 4, 1917  
15th November 4, 1930 – March 4, 1933  
Robert B. Chiperfield Republican 15th January 3, 1939 – January 3, 1949  
19th January 3, 1949 – January 3, 1963  
Marguerite S. Church Republican 13th January 3, 1951 – January 3, 1963  
Ralph E. Church Republican 10th January 3, 1935 – January 3, 1941  
January 3, 1943 – January 3, 1949  
13th January 3, 1949 – March 21, 1950 Died
Isaac Clements Republican 18th March 4, 1873 – March 4, 1875  
Roy Clippinger Republican 24th November 6, 1945 – January 3, 1949  
Harold R. Collier Republican 10th January 3, 1957 – January 3, 1973  
6th January 3, 1973 – January 3, 1975  
Cardiss Collins Democratic 7th June 5, 1973 – January 3, 1997  
George W. Collins Democratic 6th November 3, 1970 – December 8, 1972 Died
James A. Connolly Republican 17th March 4, 1895 – March 4, 1899  
Burton C. Cook Republican 6th March 4, 1865 – August 26, 1871 Resigned
Daniel P. Cook Democratic-Republican At-large March 4, 1819 – March 4, 1825  
Anti-Jacksonian March 4, 1825 – March 4, 1827
Edward D. Cooke Republican 6th March 4, 1895 – June 24, 1897 Died
Ira C. Copley Republican 11th March 4, 1911 – March 4, 1915  
Progressive March 4, 1915 – March 4, 1917  
Republican March 4, 1917 – March 4, 1923  
Tom Corcoran Republican 15th January 3, 1977 – January 3, 1983  
14th January 3, 1983 – November 28, 1984 Resigned to run for the US Senate
Franklin Corwin Republican 7th March 4, 1873 – March 4, 1875  
Jerry F. Costello Democratic 21st August 9, 1988 – January 3, 1993  
12th January 3, 1993 – January 3, 2013  
John W. Cox Jr. Democratic 16th January 3, 1991 – January 3, 1993  
Dan Crane Republican 22nd January 3, 1979 – January 3, 1983  
19th January 3, 1983 – January 3, 1985  
Philip M. Crane Republican 13th November 25, 1969 – January 3, 1973  
12th January 3, 1973 – January 3, 1993  
8th January 3, 1993 – January 3, 2005  
John M. Crebs Democratic 13th March 4, 1869 – March 4, 1873  
Joseph B. Crowley Democratic 19th March 4, 1899 – March 4, 1903  
23rd March 4, 1903 – March 4, 1905  
William Cullen Republican 7th March 4, 1881 – March 4, 1883  
8th March 4, 1883 – March 4, 1885  
Shelby M. Cullom Republican 8th March 4, 1865 – March 4, 1871  
Thomas Cusack Democratic 4th March 4, 1899 – March 4, 1901  
Danny K. Davis Democratic 7th January 3, 1997 – Present Incumbent
George R. Davis Republican 2nd March 4, 1879 – March 4, 1883  
3rd March 4, 1883 – March 4, 1885  
Jack Davis Republican 4th January 3, 1987 – January 3, 1989  
Jacob C. Davis Democratic 5th November 4, 1856 – March 4, 1857  
Rodney Davis Republican 13th January 3, 2013 – Present Incumbent
William L. Dawson Democratic 1st January 3, 1943 – November 9, 1970 Died
Stephen A. Day Republican At-large January 3, 1941 – January 3, 1945  
Oscar De Priest Republican 1st March 4, 1929 – January 3, 1935  
Edward E. Denison Republican 25th March 4, 1915 – March 4, 1931  
Edward J. Derwinski Republican 4th January 3, 1959 – January 3, 1983  
Charles S. Dewey Republican 9th January 3, 1941 – January 3, 1945  
Frank S. Dickson Republican 23rd March 4, 1905 – March 4, 1907  
William H. Dieterich Democratic At-large March 4, 1931 – March 4, 1933  
Everett M. Dirksen Republican 16th March 4, 1933 – January 3, 1949  
Donald C. Dobbins Democratic 19th March 4, 1933 – January 3, 1937  
Robert Dold Republican 10th January 3, 2011 – January 3, 2013  
January 3, 2015 – January 3, 2017  
Emily Taft Douglas Democratic At-large January 3, 1945 – January 3, 1947  
Stephen A. Douglas Democratic 5th March 4, 1843 – March 3, 1847 Resigned at close of Congress after being elected to the US Senate
Finis E. Downing Democratic 16th March 4, 1895 – June 5, 1896 Lost contested election
Thomas A. Doyle Democratic 4th November 6, 1923 – March 4, 1931  
Tammy Duckworth Democratic 8th January 3, 2013 – January 3, 2017  
Joseph Duncan Jacksonian At-large March 4, 1827 – March 4, 1833  
3rd March 4, 1833 – September 21, 1834 Resigned to become Governor of Illinois
Ransom W. Dunham Republican 1st March 4, 1883 – March 4, 1889  
Richard J. Durbin Democratic 20th January 3, 1983 – January 3, 1997  
Allan C. Durborow Jr. Democratic 3rd March 4, 1891 – March 4, 1895  
John R. Eden Democratic 7th March 4, 1863 – March 4, 1865  
15th March 4, 1873 – March 4, 1879  
17th March 4, 1885 – March 4, 1887  
Reuben Ellwood Republican 5th March 4, 1883 – July 1, 1885 Died
Rahm Emanuel Democratic 5th January 3, 2003 – January 2, 2009 Resigned to become White House Chief of Staff
Martin Emerich Democratic 1st March 4, 1903 – March 4, 1905  
William Enyart Democratic 12th January 3, 2013 – January 3, 2015  
John N. Erlenborn Republican 14th January 3, 1965 – January 3, 1983  
13th January 3, 1983 – January 3, 1985  
Lane Evans Democratic 17th January 3, 1983 – January 3, 2007  
Lynden Evans Democratic 9th March 4, 1911 – March 4, 1913  
Thomas W. Ewing Republican 15th July 2, 1991 – January 3, 2001  
John F. Farnsworth Republican 2nd March 4, 1857 – March 4, 1861  
March 4, 1863 – March 4, 1873  
Charles B. Farwell Republican 1st March 4, 1871 – March 4, 1873  
3rd March 4, 1873 – May 6, 1876 Lost contested election
March 4, 1881 – March 4, 1883  
John G. Fary Democratic 5th July 8, 1975 – January 3, 1983  
Harris W. Fawell Republican 13th January 3, 1985 – January 3, 1999  
John J. Feely Democratic 2nd March 4, 1901 – March 4, 1903  
Orlando B. Ficklin Democratic 3rd March 4, 1843 – March 4, 1849  
March 4, 1851 – March 4, 1853  
Paul Findley Republican 20th January 3, 1961 – January 3, 1983  
John F. Finerty Independent Democratic 2nd March 4, 1883 – March 4, 1885  
Edward R. Finnegan Democratic 12th January 3, 1961 – January 3, 1963  
9th January 3, 1963 – December 6, 1964 Resigned to become Judge of the Circuit Court of Cook County, IL
George W. Fithian Democratic 16th March 4, 1889 – March 4, 1895  
Louis Fitzhenry Democratic 17th March 4, 1913 – March 4, 1915  
Michael Patrick Flanagan Republican 5th January 3, 1995 – January 3, 1997  
William St. John Forman Democratic 18th March 4, 1889 – March 4, 1895  
Albert P. Forsythe Greenback 15th March 4, 1879 – March 4, 1881  
Greenbury L. Fort Republican 8th March 4, 1873 – March 4, 1881  
George E. Foss Republican 7th March 4, 1895 – March 4, 1903  
10th March 4, 1903 – March 4, 1913  
March 4, 1915 – March 4, 1919  
Bill Foster Democratic 14th March 8, 2008 – January 3, 2011  
11th January 3, 2013 – Present Incumbent
George Peter Foster Democratic 3rd March 4, 1899 – March 4, 1903  
4th March 4, 1903 – March 4, 1905  
Martin D. Foster Democratic 23rd March 4, 1907 – March 4, 1919  
Philip B. Fouke Democratic 8th March 4, 1859 – March 4, 1863  
H. Robert Fowler Democratic 24th March 4, 1911 – March 4, 1915  
Frank W. Fries Democratic 21st January 3, 1937 – January 3, 1941  
Charles Eugene Fuller Republican 12th March 4, 1903 – March 4, 1913  
March 4, 1915 – June 25, 1926 Died
Benjamin F. Funk Republican 14th March 4, 1893 – March 4, 1895  
Frank H. Funk Republican 17th March 4, 1921 – March 4, 1927  
Thomas Gallagher Democratic 8th March 4, 1909 – March 4, 1921  
Jesús “Chuy” García Democratic 4th January 3, 2019 – Present Incumbent
William H. Gest Republican 11th March 4, 1887 – March 4, 1891  
Frank Gillespie Democratic 17th March 4, 1933 – January 3, 1935  
Julius Goldzier Democratic 4th March 4, 1893 – March 4, 1895  
Thomas S. Gordon Democratic 8th January 3, 1943 – January 3, 1959  
George E. Gorman Democratic 3rd March 4, 1913 – March 4, 1915  
John J. Gorman Republican 6th March 4, 1921 – March 4, 1923  
March 4, 1925 – March 4, 1927  
Martin Gorski Democratic 4th January 3, 1943 – January 3, 1949 Died
5th January 3, 1949 – December 4, 1949
Joseph V. Graff Republican 14th March 4, 1895 – March 4, 1903  
16th March 4, 1903 – March 4, 1911
James M. Graham Democratic 21st March 4, 1909 – March 4, 1915  
William J. Graham Republican 14th March 4, 1917 – June 7, 1924 Resigned to become presiding judge of the US Court of Appeals
Peter C. Granata Republican 8th March 4, 1931 – April 5, 1932 Lost contested election
Kenneth J. Gray Democratic 25th January 3, 1955 – January 3, 1963  
21st January 3, 1963 – January 3, 1973  
24th January 3, 1973 – December 31, 1974 Resigned
22nd January 3, 1985 – January 3, 1989  
John E. Grotberg Republican 14th January 3, 1985 – November 15, 1986 Died
Luis V. Gutierrez Democratic 4th January 3, 1993 – January 3, 2019  
William F.L. Hadley Republican 18th December 2, 1895 – March 4, 1897  
Homer W. Hall Republican 17th March 4, 1927 – March 4, 1933  
Tim Lee Hall Democratic 15th January 3, 1975 – January 3, 1977  
Debbie Halvorson Democratic 11th January 3, 2009 – January 3, 2011  
Robert P. Hanrahan Republican 3rd January 3, 1973 – January 3, 1975  
John J. Hardin Whig 7th March 4, 1843 – March 4, 1845  
Abner C. Harding Republican 4th March 4, 1865 – March 4, 1869  
Philip Hare Democratic 17th January 3, 2007 – January 3, 2011  
Charles M. Harris Democratic 4th March 4, 1863 – March 4, 1865  
Thomas L. Harris Democratic 7th March 4, 1849 – March 4, 1851  
6th March 4, 1855 – November 24, 1858 Died
Carter Harrison Sr. Democratic 2nd March 4, 1875 – March 4, 1879  
William Hartzell Democratic 18th March 4, 1875 – March 4, 1879  
J. Dennis Hastert Republican 14th January 3, 1987 – November 26, 2007 Resigned
Robert M. A. Hawk Republican 5th March 4, 1879 – June 29, 1882 Died
John B. Hawley Republican 4th March 4, 1869 – March 4, 1873  
6th March 4, 1873 – March 4, 1875  
John B. Hay Republican 12th March 4, 1869 – March 4, 1873  
Charles Hayes Democratic 1st August 23, 1983 – January 3, 1993  
Philip C. Hayes Republican 7th March 4, 1877 – March 4, 1881  
James V. Heidinger Republican 24th January 3, 1941 – March 22, 1945 Died
Thomas J. Henderson Republican 6th March 4, 1875 – March 4, 1883  
7th March 4, 1883 – March 4, 1895  
John Henry Whig 7th February 5, 1847 – March 4, 1847  
Charles A. Hill Republican 8th March 4, 1889 – March 4, 1891  
Robert P. Hill Democratic 25th March 4, 1913 – March 4, 1915  
William H. Hinebaugh Progressive 12th March 4, 1913 – March 4, 1915  
William H. Hinrichsen Democratic 16th March 4, 1897 – March 4, 1899  
Robert R. Hitt Republican 5th November 7, 1882 – March 4, 1883 Died
6th March 4, 1883 – March 4, 1895
9th March 4, 1895 – March 4, 1903
13th March 4, 1903 – September 20, 1906
Charles D. Hodges Democratic 6th January 4, 1859 – March 4, 1859  
Elmer J. Hoffman Republican 14th January 3, 1959 – January 3, 1965  
Richard W. Hoffman Republican 10th January 3, 1949 – January 3, 1957  
Joseph P. Hoge Democratic 6th March 4, 1843 – March 4, 1847  
William P. Holaday Republican 18th March 4, 1923 – March 4, 1933  
Albert J. Hopkins Republican 5th December 7, 1885 – March 4, 1895  
8th March 4, 1895 – March 4, 1903  
George Evan Howell Republican 21st January 3, 1941 – October 5, 1947 Resigned after becoming judge of the US Court of Claims
Stephen A. Hoxworth Democratic 15th March 4, 1913 – March 4, 1915  
Winnifred Huck Republican At-large November 7, 1922 – March 4, 1923  
Morton D. Hull Republican 2nd April 23, 1923 – March 4, 1933  
William E. Hull Republican 16th March 4, 1923 – March 4, 1933  
Randy Hultgren Republican 14th January 3, 2011 – January 3, 2019  
Andrew J. Hunter Democratic At-large March 4, 1893 – March 4, 1895  
19th March 4, 1897 – March 4, 1899  
Stephen A. Hurlbut Republican 4th March 4, 1873 – March 4, 1877  
Henry J. Hyde Republican 6th January 3, 1975 – January 3, 2007  
James T. Igoe Democratic 6th March 4, 1927 – March 4, 1933  
Michael L. Igoe Democratic At-large January 3, 1935 – June 2, 1935 Resigned to become U.S. Attorney
Ebon C. Ingersoll Republican 5th May 20, 1864 – March 4, 1871  
Clifford C. Ireland Republican 16th March 4, 1917 – March 4, 1923  
Edward M. Irwin Republican 22nd March 4, 1925 – March 4, 1931  
Jesse Jackson, Jr. Democratic 2nd December 12, 1995 – November 21, 2012 Resigned
Edward H. Jenison Republican 18th January 3, 1947 – January 3, 1949  
23rd January 3, 1949 – January 3, 1953  
Thomas M. Jett Democratic 18th March 4, 1897 – March 4, 1903  
Anton J. Johnson Republican 14th January 3, 1939 – January 3, 1949  
Calvin D. Johnson Republican 22nd January 3, 1943 – January 3, 1945  
Tim Johnson Republican 15th January 3, 2001 – January 3, 2013  
William Richard Johnson Republican 13th March 4, 1925 – March 4, 1933  
Edgar A. Jonas Republican 12th January 3, 1949 – January 3, 1955  
Norman B. Judd Republican 1st March 4, 1867 – March 4, 1871  
Niels Juul Republican 7th March 4, 1917 – March 4, 1921  
Charles A. Karch Democratic 22nd March 4, 1931 – November 6, 1932 Died
Russell W. Keeney Republican 14th January 3, 1957 – January 11, 1958 Died
Kent E. Keller Democratic 25th March 4, 1931 – January 3, 1941  
William Kellogg Republican 4th March 4, 1857 – March 4, 1863  
Edward A. Kelly Democratic 3rd March 4, 1931 – January 3, 1943  
January 3, 1945 – January 3, 1947  
Robin Kelly Democratic 2nd April 9, 2013 – Present Incumbent
Fred J. Kern Democratic 21st March 4, 1901 – March 4, 1903  
Edward John King Republican 15th March 4, 1915 – February 17, 1929 Died
Adam Kinzinger Republican 11th January 3, 2011 – January 3, 2013  
16th January 3, 2013 – Present Incumbent
Mark Kirk Republican 10th January 3, 2001 – November 29, 2010 Resigned after being elected to the U.S. Senate
John C. Kluczynski Democratic 5th January 3, 1951 – January 26, 1975 Died
Anthony L. Knapp Democratic 6th December 12, 1861 – March 4, 1863  
10th March 4, 1863 – March 4, 1865  
Robert M. Knapp Democratic 11th March 4, 1873 – March 4, 1875  
March 4, 1877 – March 4, 1879  
Philip Knopf Republican 7th March 4, 1903 – March 4, 1909  
James Knox Whig 4th March 4, 1853 – March 4, 1855  
Opposition March 4, 1855 – March 4, 1857  
Leo Kocialkowski Democratic 8th March 4, 1933 – January 3, 1943  
Raja Krishnamoorthi Democratic 8th January 3, 2017 – Present Incumbent
Stanley H. Kunz Democratic 8th March 4, 1921 – March 4, 1931 [
April 5, 1932 – March 4, 1933 Won contested election
Andrew J. Kuykendall Republican 13th March 4, 1865 – March 4, 1867 [
Darin LaHood Republican 18th September 10, 2015 – Present Elected to finish Aaron Schock’s term.
Ray LaHood Republican 18th January 3, 1995 – January 3, 2009  
Silas Z. Landes Democratic 16th March 4, 1885 – March 4, 1889  
Edward Lane Democratic 17th March 4, 1887 – March 4, 1895  
William Lathrop Republican 4th March 4, 1877 – March 4, 1879  
Frank Lawler Democratic 2nd March 4, 1885 – March 4, 1891  
John V. Le Moyne Democratic 3rd May 6, 1876 – March 4, 1877 Won contested election
John H. Lewis Republican 9th March 4, 1881 – March 4, 1883  
Roland V. Libonati Democratic 7th December 31, 1957 – January 3, 1965  
Abraham Lincoln Whig 7th March 4, 1847 – March 4, 1849 Retired to private sector.
Neil J. Linehan Democratic 3rd January 3, 1949 – January 3, 1951  
William W. Link Democratic 7th January 3, 1945 – January 3, 1947  
Bill Lipinski Democratic 5th January 3, 1983 – January 3, 1993  
3rd January 3, 1993 – January 3, 2005  
Dan Lipinski Democratic 3rd January 3, 2005 – January 3, 2021 Defeated in primary by Marie Newman
John A. Logan Democratic 9th March 4, 1859 – April 2, 1862 Resigned to accept commission as a brigadier general in the Union Army
Republican At-large March 4, 1867 – March 3, 1871 Resigned to become a US Senator
Lewis M. Long Democratic At-large January 3, 1937 – January 3, 1939  
William Lorimer Republican 2nd March 4, 1895 – March 4, 1901  
6th March 4, 1903 – June 17, 1909 Resigned after being elected to the US Senate
Owen Lovejoy Republican 3rd March 4, 1857 – March 4, 1863  
5th March 4, 1863 – March 25, 1864 Died
Frank O. Lowden Republican 13th November 6, 1906 – March 4, 1911  
Scott W. Lucas Democratic 20th January 3, 1935 – January 3, 1939  
Frederick Lundin Republican 7th March 4, 1909 – March 4, 1911  
A. F. Maciejewski Democratic 6th January 3, 1939 – December 8, 1942 Resigned
Peter F. Mack Jr. Democratic 21st January 3, 1949 – January 3, 1963  
Martin B. Madden Republican 1st March 4, 1905 – April 27, 1928 Died
Edward Rell Madigan Republican 21st January 3, 1973 – January 3, 1983  
15th January 3, 1983 – March 8, 1991 Resigned to become U.S. Secretary of Agriculture
William F. Mahoney Democratic 5th March 4, 1901 – March 4, 1903  
8th March 4, 1903 – December 27, 1904 Died
J. Earl Major Democratic 21st March 4, 1923 – March 4, 1925  
March 4, 1927 – March 4, 1929  
March 4, 1931 – October 6, 1933 Resigned after becoming judge of the US District Court for the Southern District of Illinois
James R. Mann Republican 1st March 4, 1897 – March 4, 1903  
2nd March 4, 1903 – November 30, 1922 Died
Donald A. Manzullo Republican 16th January 3, 1993 – January 3, 2013  
Benjamin F. Marsh Republican 10th March 4, 1877 – March 4, 1883  
11th March 4, 1893 – March 4, 1895  
15th March 4, 1895 – March 4, 1901  
14th March 4, 1903 – June 2, 1905 Died
Samuel S. Marshall Democratic 9th March 4, 1855 – March 4, 1859  
11th March 4, 1865 – March 4, 1873  
19th March 4, 1873 – March 4, 1875  
Charles Martin Democratic 4th March 4, 1917 – October 28, 1917 Died
James Stewart Martin Republican 16th March 4, 1873 – March 4, 1875  
John C. Martin Democratic At-large January 3, 1939 – January 3, 1941  
Lynn Morley Martin Republican 16th January 3, 1981 – January 3, 1991  
Harry H. Mason Democratic 21st January 3, 1935 – January 3, 1937  
Noah M. Mason Republican 12th January 3, 1937 – January 3, 1949  
15th January 3, 1949 – January 3, 1963  
William E. Mason Republican 3rd March 4, 1887 – March 4, 1891  
At-large March 4, 1917 – June 16, 1921 Died
William L. May Democratic 3rd December 1, 1834 – March 4, 1837  
March 4, 1837 – March 4, 1839  
James McAndrews Democratic 4th March 4, 1901 – March 4, 1903  
5th March 4, 1903 – March 4, 1905  
6th March 4, 1913 – March 4, 1921  
9th January 3, 1935 – January 3, 1941  
John A. McClernand Democratic 2nd March 4, 1843 – March 4, 1851  
6th November 8, 1859 – October 28, 1861 Resigned to accept commission as brigadier general of volunteers for service in the Civil War
Robert McClory Republican 12th January 3, 1963 – January 3, 1973  
13th January 3, 1973 – January 3, 1983  
Joseph M. McCormick Republican At-large March 4, 1917 – March 4, 1919  
Ruth H. McCormick Republican At-large March 4, 1929 – March 4, 1931  
John J. McDannold Democratic 12th March 4, 1893 – March 4, 1895  
James T. McDermott Democratic 4th March 4, 1907 – July 21, 1914 Resigned
March 4, 1915 – March 4, 1917 Elected to fill his own seat
Lawrence E. McGann Democratic 2nd March 4, 1891 – March 4, 1895  
3rd March 4, 1895 – December 27, 1895 Lost contested election
Charles McGavin Republican 8th March 4, 1905 – March 4, 1909  
John C. McKenzie Republican 13th March 4, 1911 – March 4, 1925  
Raymond S. McKeough Democratic 2nd January 3, 1935 – January 3, 1943  
William B. McKinley Republican 19th March 4, 1905 – March 4, 1913  
March 4, 1915 – March 4, 1921  
James McKinney Republican 14th November 7, 1905 – March 4, 1913  
John McLean Democratic-Republican At-large December 3, 1818 – March 4, 1819  
Robert T. McLoskey Republican 19th January 3, 1963 – January 3, 1965  
Rolla C. McMillen Republican 19th June 13, 1944 – January 3, 1949  
22nd January 3, 1949 – January 3, 1951  
Thompson W. McNeely Democratic 9th March 4, 1869 – March 4, 1873  
John McNulta Republican 13th March 4, 1873 – March 4, 1875  
William E. McVey Republican 4th January 3, 1951 – August 10, 1958 Died
James A. Meeks Democratic 18th March 4, 1933 – January 3, 1939  
Ralph Metcalfe Democratic 1st January 3, 1971 – October 10, 1978 Died
M. Alfred Michaelson Republican 7th March 4, 1921 – March 4, 1931  
Anthony Michalek Republican 5th March 4, 1905 – March 4, 1907  
Robert H. Michel Republican 18th January 3, 1957 – January 3, 1995  
J. Ross Mickey Democratic 15th March 4, 1901 – March 4, 1903  
Abner J. Mikva Democratic 2nd January 3, 1969 – January 3, 1973  
10th January 3, 1975 – September 26, 1979 Resigned to become judge of U.S. Court of Appeals
Edward E. Miller Republican 22nd March 4, 1923 – March 4, 1925  
Mary Miller Republican 15th January 3, 2021 – Present Incumbent
Daniel W. Mills Republican 4th March 4, 1897 – March 4, 1899  
Arthur W. Mitchell Democratic 1st January 3, 1935 – January 3, 1943  
Richard S. Molony Democratic 4th March 4, 1851 – March 4, 1853  
Allen F. Moore Republican 19th March 4, 1921 – March 4, 1925  
Jesse Hale Moore Republican 7th March 4, 1869 – March 4, 1873  
Isaac N. Morris Democratic 5th March 4, 1857 – March 4, 1861  
James L.D. Morrison Democratic 8th November 4, 1856 – March 4, 1857  
William Ralls Morrison Democratic 12th March 4, 1863 – March 4, 1865  
17th March 4, 1873 – March 4, 1883  
18th March 4, 1883 – March 4, 1887
Samuel W. Moulton Republican At-large March 4, 1865 – March 4, 1867  
Democratic 15th March 4, 1881 – March 4, 1883  
17th March 4, 1883 – March 4, 1885
William J. Moxley Republican 6th November 23, 1909 – March 4, 1911  
P. H. Moynihan Republican 2nd March 4, 1933 – January 3, 1935  
Everett J. Murphy Republican 21st March]] 4, 1895 – March 4, 1897  
Morgan F. Murphy Democratic 3rd January 3, 1971 – January 3, 1973  
2nd January 3, 1973 – January 3, 1981  
William T. Murphy Democratic 3rd January 3, 1959 – January 3, 1971  
James C. Murray Democratic 3rd January 3, 1955 – January 3, 1957  
William H. Neece Democratic 11th March 4, 1883 – March 4, 1887  
Walter Nesbit Democratic At-large March 4, 1933 – January 3, 1935  
Walter C. Newberry Democratic 4th March 4, 1891 – March 4, 1893  
Marie Newman Democratic 3rd January 3, 2021 – Present Incumbent
Edward T. Noonan Democratic 5th March 4, 1899 – March 4, 1901  
Jesse O. Norton Whig 3rd March 4, 1853 – March 4, 1855  
Opposition March 4, 1855 – March 4, 1857
Republican 6th March 4, 1863 – March 4, 1865  
George M. O’Brien Republican 17th January 3, 1973 – January 3, 1983 Died
4th January 3, 1983 – July 17, 1986
Thomas J. O’Brien Democratic 6th March 4, 1933 – January 3, 1939  
January 3, 1943 – April 14, 1964 Died
Frank T. O’Hair Democratic 18th March 4, 1913 – March 4, 1915  
Barratt O’Hara Democratic 2nd January 3, 1949 – January 3, 1951  
January 3, 1953 – January 3, 1969  
Thomas L. Owens Republican 7th January 3, 1947 – June 7, 1948 Died
George A. Paddock Republican 10th January 3, 1941 – January 3, 1943  
Claude V. Parsons Democratic 24th November 4, 1930 – January 3, 1941  
Lewis E. Payson Republican 8th March 4, 1881 – March 4, 1883  
9th March 4, 1883 – March 4, 1891  
David D. Phelps Democratic 19th January 3, 1999 – January 3, 2003  
Ralph Plumb Republican 8th March 4, 1885 – March 4, 1889  
Nathaniel Pope Democratic-Republican Territory March 4, 1817 – November 30, 1818  
John Edward Porter Republican 10th January 22, 1980 – January 3, 2001  
Glenn Poshard Democratic 22nd January 3, 1989 – January 3, 1993  
19th January 3, 1993 – January 3, 1999  
Philip S. Post Republican 10th March 4, 1887 – January 6, 1895 Died
Melvin Price Democratic 22nd January 3, 1945 – January 3, 1949  
25th January 3, 1949 – January 3, 1953  
24th January 3, 1953 – January 3, 1973  
23rd January 3, 1973 – January 3, 1983  
21st January 3, 1983 – April 22, 1988 Died
George W. Prince Republican 10th December 2, 1895 – March 4, 1903  
15th March 4, 1903 – March 4, 1913  
Roman C. Pucinski Democratic 11th January 3, 1959 – January 3, 1973  
Michael Quigley Democratic 5th April 7, 2009 – Present Incumbent
Tom Railsback Republican 19th January 3, 1967 – January 3, 1983 [
Henry T. Rainey Democratic 20th March 4, 1903 – March 4, 1921  
March 4, 1923 – August 19, 1934 Died
John W. Rainey Democratic 4th April 2, 1918 – May 4, 1923 Died
Frank M. Ramey Republican 21st March 4, 1929 – March 4, 1931  
Henry Riggs Rathbone Republican At-large March 4, 1923 – July 15, 1928 Died
Green B. Raum Republican 13th March 4, 1867 – March 4, 1869  
William H. Ray Republican 10th March 4, 1873 – March 4, 1875  
Chauncey W. Reed Republican 11th January 3, 1935 – January 3, 1949  
14th January 3, 1949 – February 9, 1956 Died
Walter Reeves Republican 11th March 4, 1895 – March 4, 1903  
Charlotte T. Reid Republican 15th January 3, 1963 – October 7, 1971 Resigned to become member of the Federal Communications Commission
Frank R. Reid Republican 11th March 4, 1923 – January 3, 1935  
Frederick Remann Republican 18th March 4, 1895 – July 14, 1895 Died
Alexander J. Resa Democratic 9th January 3, 1945 – January 3, 1947  
John Reynolds Jacksonian 1st December 1, 1834 – March 4, 1837  
Democratic March 4, 1839 – March 4, 1843  
Mel Reynolds Democratic 2nd January 3, 1993 – October 1, 1995 Resigned
Edward Y. Rice Democratic 10th March 4, 1871 – March 4, 1873  
John Blake Rice Republican 1st March 4, 1873 – December 17, 1874 Died
William A. Richardson Democratic 5th December 6, 1847 – August 25, 1856 Resigned
March 4, 1861 – January 29, 1863 Resigned after being elected to the US Senate
James M. Riggs Democratic 12th March 4, 1883 – March 4, 1887  
Hugh M. Rigney Democratic 19th January 3, 1937 – January 3, 1939  
John I. Rinaker Republican 16th June 5, 1896 – March 4, 1897 Won contested election
Zeno J. Rives Republican 21st March 4, 1905 – March 4, 1907  
James Carroll Robinson Democratic 7th March 4, 1859 – March 4, 1863  
11th March 4, 1863 – March 4, 1865  
8th March 4, 1871 – March 4, 1873  
12th March 4, 1873 – March 4, 1875  
William A. Rodenberg Republican 21st March 4, 1899 – March 4, 1901  
22nd March 4, 1903 – March 4, 1913  
March 4, 1915 – March 4, 1923  
Daniel J. Ronan Democratic 6th January 3, 1965 – August 13, 1969 Died
Peter Roskam Republican 6th January 3, 2007 – January 3, 2019  
Lewis W. Ross Democratic 9th March 4, 1863 – March 4, 1869  
Dan Rostenkowski Democratic 8th January 3, 1959 – January 3, 1993  
5th January 3, 1993 – January 3, 1995  
William A. Rowan Democratic 2nd January 3, 1943 – January 3, 1947  
Jonathan H. Rowell Republican 14th March 4, 1883 – March 4, 1891  
Donald Rumsfeld Republican 13th January 3, 1963 – May 25, 1969 Resigned to become Director of the Office of Economic Opportunity
Bobby Rush Democratic 1st January 3, 1993 – Present Incumbent
Marty Russo Democratic 3rd January 3, 1975 – January 3, 1993  
Adolph J. Sabath Democratic 5th March 4, 1907 – January 3, 1949  
7th January 3, 1949 – November 6, 1952 Died
George E. Sangmeister Democratic 4th January 3, 1989 – January 3, 1993  
11th January 3, 1993 – January 3, 1995  
Gus Savage Democratic 2nd January 3, 1981 – January 3, 1993  
Edwin M. Schaefer Democratic 22nd March 4, 1933 – January 3, 1943  
Janice D. Schakowsky Democratic 9th January 3, 1999 – Present Incumbent
Bobby Schilling Republican 17th January 3, 2011 – January 3, 2013  
Gale Schisler Democratic 19th January 3, 1965 – January 3, 1967  
Brad Schneider Democratic 10th January 3, 2013 – January 3, 2015  
January 3, 2017 – present Incumbent
Aaron Schock Republican 18th January 3, 2009 – March 31, 2015  
Leonard W. Schuetz Democratic 7th March 4, 1931 – February 13, 1944 Died
Owen Scott Democratic 14th March 4, 1891 – March 4, 1893  
Thomas J. Selby Democratic 16th March 4, 1901 – March 4, 1903  
Aaron Shaw Democratic 7th March 4, 1857 – March 4, 1859  
16th March 4, 1883 – March 4, 1885  
Guy L. Shaw Republican 20th March 4, 1921 – March 4, 1923  
Timothy P. Sheehan Republican 11th January 3, 1951 – January 3, 1959  
John C. Sherwin Republican 4th March 4, 1879 – March 4, 1883  
John Shimkus Republican 20th January 3, 1997 – January 3, 2003  
19th January 3, 2003 – January 3, 2013  
15th January 3, 2013 – January 3, 2021 Retired
George E. Shipley Democratic 23rd January 3, 1959 – January 3, 1973  
22nd January 3, 1973 – January 3, 1979  
Paul Simon Democratic 24th January 3, 1975 – January 3, 1983  
22nd January 3, 1983 – January 3, 1985  
Edna O. Simpson Republican 20th January 3, 1959 – January 3, 1961  
James Simpson Jr. Republican 10th March 4, 1933 – January 3, 1935  
Sid Simpson Republican 20th January 3, 1943 – October 26, 1958 Died
James W. Singleton Democratic 11th March 4, 1879 – March 4, 1883  
Charles Slade Jacksonian 1st March 4, 1833 – July 26, 1834 Died
Dietrich C. Smith Republican 13th March 4, 1881 – March 4, 1883  
Frank L. Smith Republican 17th March 4, 1919 – March 4, 1921  
George W. Smith Republican 20th March 4, 1889 – March 4, 1895  
22nd March 4, 1895 – March 4, 1903  
25th March 4, 1903 – November 30, 1907 Died
Robert Smith Democratic 1st March 4, 1843 – March 4, 1847  
Independent Democratic March 4, 1847 – March 4, 1849  
Democratic 8th March 4, 1857 – March 4, 1859  
Thomas V. Smith Democratic At-large January 3, 1939 – January 3, 1941  
Henry Snapp Republican 6th December 4, 1871 – March 4, 1873  
Howard M. Snapp Republican 11th March 4, 1903 – March 4, 1911  
Herman W. Snow Democratic 9th March 4, 1891 – March 4, 1893  
Adam W. Snyder Democratic 1st March 4, 1837 – March 4, 1839  
William A.J. Sparks Democratic 16th March 4, 1875 – March 4, 1883  
William L. Springer Republican 22nd January 3, 1951 – January 3, 1973  
William M. Springer Democratic 12th March 4, 1875 – March 4, 1883  
13th March 4, 1883 – March 4, 1895  
Elliott W. Sproul Republican 3rd March 4, 1921 – March 4, 1931  
Edmund J. Stack Democratic 6th March 4, 1911 – March 4, 1913  
Benjamin Stephenson Democratic-Republican Territory November 14, 1814 – March 4, 1817  
John A. Sterling Republican 17th March 4, 1903 – March 4, 1913  
March 4, 1915 – October 17, 1918 Died
Bradford N. Stevens Democratic 5th March 4, 1871 – March 4, 1873  
Adlai E. Stevenson I Democratic 13th March 4, 1875 – March 4, 1877  
March 4, 1879 – March 4, 1881  
Lewis Steward Democratic 8th March 4, 1891 – March 4, 1893  
Bennett M. Stewart Democratic 1st January 3, 1979 – January 3, 1981  
Claude U. Stone Democratic 16th March 4, 1911 – March 4, 1917  
William Stratton Republican At-large January 3, 1941 – January 3, 1943  
January 3, 1947 – January 3, 1949  
Lawrence B. Stringer Democratic At-large March 4, 1913 – March 4, 1915  
John T. Stuart Whig 3rd March 4, 1839 – March 4, 1843  
Democratic 8th March 4, 1863 – March 4, 1865  
Jessie Sumner Republican 18th January 3, 1939 – January 3, 1947)  
Clyde H. Tavenner Democratic 14th March 4, 1913 – March 4, 1917  
Abner Taylor Republican 1st March 4, 1889 – March 4, 1893  
Napoleon B. Thistlewood Republican 25th February 15, 1908 – March 4, 1913  
John R. Thomas Republican 18th March 4, 1879 – March 4, 1883  
20th March 4, 1883 – March 4, 1889  
Chester Thompson Democratic 14th March 4, 1933 – January 3, 1939  
Charles M. Thomson Progressive 10th March 4, 1913 – March 4, 1915  
Anthony Thornton Democratic 10th March 4, 1865 – March 4, 1867  
Thomas F. Tipton Republican 13th March 4, 1877 – March 4, 1879  
Richard W. Townshend Democratic 19th March 4, 1877 – March 9, 1889 Died
Thomas J. Turner Democratic 6th March 4, 1847 – March 4, 1849  
Robert J. Twyman Republican 9th January 3, 1947 – January 3, 1949  
Lauren Underwood Democratic 14th January 3, 2019 – Present Incumbent
Richard B. Vail Republican 2nd January 3, 1947 – January 3, 1949  
January 3, 1951 – January 3, 1953  
Harold H. Velde Republican 18th January 3, 1949 – January 3, 1957  
Charles W. Vursell Republican 23rd January 3, 1943 – January 3, 1949  
24th January 3, 1949 – January 3, 1953  
23rd January 3, 1953 – January 3, 1959  
Joe Walsh Republican 8th January 3, 2011 – January 3, 2013  
James H. Ward Democratic 3rd March 4, 1885 – March 4, 1887  
Jasper D. Ward Republican 2nd March 4, 1873 – March 4, 1875  
Vespasian Warner Republican 13th March 4, 1895 – March 4, 1903  
19th March 4, 1903 – March 4, 1905  
Elihu B. Washburne Whig 1st March 4, 1853 – March 4, 1855  
Republican March 4, 1855 – March 4, 1863  
3rd March 4, 1863 – March 6, 1869 Resigned to become United States Secretary of State
Harold Washington Democratic 1st January 3, 1981 – April 30, 1983 Resigned to become Mayor of Chicago
Jerry Weller Republican 11th January 3, 1995 – January 3, 2009  
John Wentworth Democratic 4th March 4, 1843 – March 4, 1851  
2nd March 4, 1853 – March 4, 1855  
Republican 1st March 4, 1865 – March 4, 1867  
Charles S. Wharton Republican 4th March 4, 1905 – March 4, 1907  
William H. Wheat Republican 19th January 3, 1939 – January 16, 1944 Died
Hamilton K. Wheeler Republican 9th March 4, 1893 – March 4, 1895  
Loren E. Wheeler Republican 21st March 4, 1915 – March 4, 1923  
March 4, 1925 – March 4, 1927  
George E. White Republican 5th March 4, 1895 – March 4, 1899  
Richard H. Whiting Republican 9th March 4, 1875 – March 4, 1877  
Scott Wike Democratic 11th March 4, 1875 – March 4, 1877  
12th March 4, 1889 – March 4, 1893  
James R. Williams Democratic 19th December 2, 1889 – March 4, 1895  
20th March 4, 1899 – March 4, 1903  
24th March 4, 1903 – March 4, 1905  
Thomas Sutler Williams Republican 24th March 4, 1915 – November 11, 1929 Resigned to become a judge to the United States Court of Claims
William E. Williams Democratic 16th March 4, 1899 – March 4, 1901  
At-large March 4, 1913 – March 4, 1917  
William Warfield Wilson Republican 3rd March 4, 1903 – March 4, 1913  
March 4, 1915 – March 4, 1921  
Benson Wood Republican 19th March 4, 1895 – March 4, 1897  
Charles W. Woodman Republican 4th March 4, 1895 – March 4, 1897  
James H. Woodworth Republican 2nd March 4, 1855 – March 4, 1857  
Nicholas E. Worthington Democratic 10th March 4, 1883 – March 4, 1887  
Richard Yates Whig 7th March 4, 1851 – March 4, 1853  
6th March 4, 1853 – March 4, 1855  
Richard Yates Jr. Republican At-large March 4, 1919 – March 4, 1933  
Sidney R. Yates Democratic 9th January 3, 1949 – January 3, 1963  
January 3, 1965 – January 3, 1999  
Samuel H. Young Republican 10th January 3, 1973 – January 3, 1975  
Timothy R. Young Democratic 3rd March 4, 1849 – March 4, 1851