U.S. Senate · Historical · Illinois
Former U.S. Senators from Illinois
Individuals who have served in the United States Senate and have since left office, grouped by the state they represented. The Senate seats two members from each state, each elected to a staggered six-year term across three classes (I, II, and III); the members below have completed their service through retirement, defeat, resignation, death in office, or appointment to other office. Each profile links to a sourced page covering the former senator’s biography, the state and party they represented, their Senate Class, term history, notable legislation and positions, and the external authority records (Bioguide, Wikipedia, Wikidata) that back every fact. Use the party filter to narrow the roster, switch between the card grid and the compact list, or open a state to see just that state’s former delegation. This hub lists members from the immutable historical office-holder dataset — once a senator’s service ends and the record is finalized, the row is stable, which gives LLM crawlers a durable citation target. Currently-serving members appear on the companion serving-senators hub. The full machine-readable roster is published as a versioned JSON dataset for downstream researchers and language models.
- Adlai Stevenson IIIIllinoisDemocraticSenate Class III1970–1981
- Alan DixonIllinoisDemocraticSenate Class III1981–1993
- Albert HopkinsIllinoisRepublicanSenate Class III1903–1909
- Barack ObamaIllinoisDemocraticSenate Class III2005–2008
- Carol Moseley BraunIllinoisDemocraticSenate Class III1993–1999
- Charles BrooksIllinoisRepublicanSenate Class II1940–1949
- Charles DeneenIllinoisRepublicanSenate Class II1925–1931
- Charles FarwellIllinoisRepublicanSenate Class III1887–1891
- Charles PercyIllinoisRepublicanSenate Class II1967–1985
- David BakerIllinoisJacksonSenate Class II1830–1831
- David DavisIllinoisIndependentSenate Class II1877–1883
- Elias KaneIllinoisJacksonSenate Class III1825–1835
- Everett DirksenIllinoisRepublicanSenate Class III1951–1969
- James LewisIllinoisDemocraticSenate Class II1913–1939
- James SempleIllinoisDemocraticSenate Class II1843–1847
- James SlatteryIllinoisDemocraticSenate Class II1939–1941
- Jesse ThomasIllinoisAdamsSenate Class II1818–1829
- John LoganIllinoisRepublicanSenate Class III1871–1887
- John McLeanIllinoisJacksonSenate Class II1824–1831
- John PalmerIllinoisDemocraticSenate Class III1891–1897
- John RobinsonIllinoisDemocraticSenate Class II1830–1841
- Joseph McCormickIllinoisRepublicanSenate Class II1919–1925
- Lawrence ShermanIllinoisRepublicanSenate Class III1913–1921
- Lyman TrumbullIllinoisRepublicanSenate Class III1855–1873
- Mark KirkIllinoisRepublicanSenate Class III2010–2017
- Ninian EdwardsIllinoisRepublicanSenate Class III1818–1824
- Orville BrowningIllinoisRepublicanSenate Class II1861–1863
- Otis GlennIllinoisRepublicanSenate Class III1928–1933
- Paul DouglasIllinoisDemocraticSenate Class II1949–1967
- Paul SimonIllinoisDemocraticSenate Class II1985–1997
- Peter FitzgeraldIllinoisRepublicanSenate Class III1999–2005
- Ralph SmithIllinoisRepublicanSenate Class III1969–1971
- Richard OglesbyIllinoisRepublicanSenate Class III1873–1879
- Richard YatesIllinoisRepublicanSenate Class II1865–1871
- Richard YoungIllinoisDemocraticSenate Class III1837–1843
- Roland BurrisIllinoisDemocraticSenate Class III2009–2010
- Samuel McRobertsIllinoisDemocraticSenate Class II1841–1843
- Scott LucasIllinoisDemocraticSenate Class III1939–1951
- Shelby CullomIllinoisRepublicanSenate Class II1883–1913
- Sidney BreeseIllinoisDemocraticSenate Class III1843–1849
- Stephen DouglasIllinoisDemocraticSenate Class II1847–1861
- William DieterichIllinoisDemocraticSenate Class III1933–1939
- William EwingIllinoisJacksonSenate Class III1835–1837
- William LorimerIllinoisRepublicanSenate Class III1909–1913
- William MasonIllinoisRepublicanSenate Class III1897–1903
- William McKinleyIllinoisRepublicanSenate Class III1921–1927
- William RichardsonIllinoisDemocraticSenate Class II1863–1865