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.
- Albert CumminsIowaRepublicanSenate Class III1908–1926
- Augustus DodgeIowaDemocraticSenate Class III1848–1855
- Bourke HickenlooperIowaRepublicanSenate Class III1945–1969
- Charles RawsonIowaRepublicanSenate Class II1922–1923
- Clyde HerringIowaDemocraticSenate Class II1937–1943
- Daniel SteckIowaDemocraticSenate Class II1926–1931
- David StewartIowaRepublicanSenate Class III1926–1927
- Dick ClarkIowaDemocraticSenate Class II1973–1979
- George JonesIowaDemocraticSenate Class II1848–1859
- George WilsonIowaRepublicanSenate Class II1943–1949
- George WrightIowaRepublicanSenate Class II1871–1877
- Guy GilletteIowaDemocraticSenate Class II1936–1955
- Harold HughesIowaDemocraticSenate Class III1969–1975
- Jack MillerIowaRepublicanSenate Class II1961–1973
- James GrimesIowaRepublicanSenate Class II1859–1869
- James HarlanIowaRepublicanSenate Class III1855–1873
- James HowellIowaRepublicanSenate Class II1870–1871
- James McDillIowaRepublicanSenate Class II1881–1883
- James WilsonIowaRepublicanSenate Class II1883–1895
- John CulverIowaDemocraticSenate Class III1975–1981
- John GearIowaRepublicanSenate Class II1895–1901
- Jonathan DolliverIowaRepublicanSenate Class II1900–1910
- Lafayette YoungIowaRepublicanSenate Class II1910–1911
- Lester DickinsonIowaRepublicanSenate Class II1931–1937
- Richard MurphyIowaDemocraticSenate Class III1933–1937
- Roger JepsenIowaRepublicanSenate Class II1979–1985
- Samuel KirkwoodIowaRepublicanSenate Class II1866–1881
- Smith BrookhartIowaRepublicanSenate Class III1922–1933
- Thomas MartinIowaRepublicanSenate Class II1955–1961
- Tom HarkinIowaDemocraticSenate Class II1985–2015
- William AllisonIowaRepublicanSenate Class III1873–1909
- William KenyonIowaRepublicanSenate Class II1911–1923