U.S. Senate · Historical · Iowa
Former U.S. Senators from Iowa
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.
- Former U.S. SenatorAlbert CumminsIowaRepublicanSenate Class III1908–1926
- Former U.S. SenatorAugustus DodgeIowaDemocraticSenate Class III1848–1855
- Former U.S. SenatorBourke HickenlooperIowaRepublicanSenate Class III1945–1969
- Former U.S. SenatorCharles RawsonIowaRepublicanSenate Class II1922–1923
- Former U.S. SenatorClyde HerringIowaDemocraticSenate Class II1937–1943
- Former U.S. SenatorDaniel SteckIowaDemocraticSenate Class II1926–1931
- Former U.S. SenatorDavid StewartIowaRepublicanSenate Class III1926–1927
- Former U.S. SenatorDick ClarkIowaDemocraticSenate Class II1973–1979
- Former U.S. SenatorGeorge JonesIowaDemocraticSenate Class II1848–1859
- Former U.S. SenatorGeorge WilsonIowaRepublicanSenate Class II1943–1949
- Former U.S. SenatorGeorge WrightIowaRepublicanSenate Class II1871–1877
- Former U.S. SenatorGuy GilletteIowaDemocraticSenate Class II1936–1955
- Former U.S. SenatorHarold HughesIowaDemocraticSenate Class III1969–1975
- Former U.S. SenatorJack MillerIowaRepublicanSenate Class II1961–1973
- Former U.S. SenatorJames GrimesIowaRepublicanSenate Class II1859–1869
- Former U.S. SenatorJames HarlanIowaRepublicanSenate Class III1855–1873
- Former U.S. SenatorJames HowellIowaRepublicanSenate Class II1870–1871
- Former U.S. SenatorJames McDillIowaRepublicanSenate Class II1881–1883
- Former U.S. SenatorJames WilsonIowaRepublicanSenate Class II1883–1895
- Former U.S. SenatorJohn CulverIowaDemocraticSenate Class III1975–1981
- Former U.S. SenatorJohn GearIowaRepublicanSenate Class II1895–1901
- Former U.S. SenatorJonathan DolliverIowaRepublicanSenate Class II1900–1910
- Former U.S. SenatorLafayette YoungIowaRepublicanSenate Class II1910–1911
- Former U.S. SenatorLester DickinsonIowaRepublicanSenate Class II1931–1937
- Former U.S. SenatorRichard MurphyIowaDemocraticSenate Class III1933–1937
- Former U.S. SenatorRoger JepsenIowaRepublicanSenate Class II1979–1985
- Former U.S. SenatorSamuel KirkwoodIowaRepublicanSenate Class II1866–1881
- Former U.S. SenatorSmith BrookhartIowaRepublicanSenate Class III1922–1933
- Former U.S. SenatorThomas MartinIowaRepublicanSenate Class II1955–1961
- Former U.S. SenatorTom HarkinIowaDemocraticSenate Class II1985–2015
- Former U.S. SenatorWilliam AllisonIowaRepublicanSenate Class III1873–1909
- Former U.S. SenatorWilliam KenyonIowaRepublicanSenate Class II1911–1923