United States congressional delegations from Iowa

Iowa

Census Topic	Value
Population	3,190,369
Gender	49.6% Male 50.4% Female
Race	84.5% White 4.1% Black 2.4% Asian 0.5% Native American 0.2% Pacific Islander 2.8% Other (single race) 5.6% Multiple
Ethnicity	6.8% Hispanic or Latino origin
Median household income	$73,147
High school graduation rate	93.2%
College graduation rate	30.9%
Upcoming elections	U.S. House, 2026 U.S. Senate, 2026

Source: U.S. Census Bureau, 2020 census and 2023 ACS data. Percentages are rounded to the nearest 0.1%.

This page displays the current and historical members of U.S. Congress from Iowa.

Here is the current partisan breakdown of the congressional members from Iowa.

Congressional Partisan Breakdown from Iowa
Party	U.S. Senate	U.S. House	Total
Democratic	0	0	0
Republican	2	4	6
Independent	0	0	0
Vacancies	0	0	0
Total	2	4	6

Current members

U.S. Senate

See also: Classes of United States Senators

The current members of the U.S. Senate from Iowa are:

Office	Name	Party	Date assumed office	Date term ends
U.S. Senate Iowa	Joni Ernst	Republican	January 3, 2015	January 3, 2027
U.S. Senate Iowa	Chuck Grassley	Republican	January 3, 1981	January 3, 2029

U.S. House

The current members of the U.S. House from Iowa are:

Office	Name	Party	Date assumed office	Date term ends
U.S. House Iowa District 1	Mariannette Miller-Meeks	Republican	January 3, 2023	January 3, 2027
U.S. House Iowa District 2	Ashley Hinson	Republican	January 3, 2023	January 3, 2027
U.S. House Iowa District 3	Zach Nunn	Republican	January 3, 2023	January 3, 2027
U.S. House Iowa District 4	Randy Feenstra	Republican	January 3, 2021	January 3, 2027

Historical members

U.S. Senate

Historical Representation to the U.S. Senate by Party from Iowa
Party	Total
Democratic	11
Republican	27

Class 2 Senators from Iowa
Senator	Party	Years Served
George W. Jones	Democratic	1848-1859
James W. Grimes	Republican	1859-1869
James B. Howell	Republican	1870-1871
George G. Wright	Republican	1871-1877
Samuel J. Kirkwood	Republican	1877-1881
James W. McDill	Republican	1881-1883
James F. Wilson	Republican	1883-1895
John H. Gear	Republican	1895-1900
Jonathan P. Dolliver	Republican	1900-1910
Lafayette Young	Republican	1910-1911
William S. Kenyon	Republican	1911-1922
Charles A. Rawson	Republican	1922-1922
Smith W. Brookhart	Republican	1922-1926
Daniel F. Steck	Democratic	1926-1931
Lester J. Dickinson	Republican	1931-1937
Clyde L. Herring	Democratic	1937-1943
George A. Wilson	Republican	1943-1949
Guy M. Gillette	Democratic	1949-1955
Thomas E. Martin	Republican	1955-1961
Jack R. Miller	Republican	1961-1973
Richard C. Clark	Democratic	1973-1979
Roger W. Jepsen	Republican	1979-1985
Tom Harkin	Democratic	1985-2015
Joni Ernst	Republican	2015-Present

Class 3 Senators from Iowa
Senator	Party	Years Served
Augustus C. Dodge	Democratic	1848-1855
James Harlan	Republican	1855-1865
Samuel J. Kirkwood	Republican	1866-1867
James Harlan	Republican	1867-1873
William B. Allison	Republican	1873-1908
Albert B. Cummins	Republican	1908-1926
David W. Stewart	Republican	1926-1927
Smith W. Brookhart	Republican	1927-1933
Richard L. Murphy	Democratic	1933-1936
Guy M. Gillette	Democratic	1936-1945
Bourke B. Hickenlooper	Republican	1945-1969
Harold E. Hughes	Democratic	1969-1975
John C. Culver	Democratic	1975-1981
Chuck Grassley	Republican	1981-Present

2000s

Historical Representation to the U.S. House by Party in the 2000s from Iowa
Party	Total
Democratic	4
Republican	7
Total Representatives	11

Representatives to the U.S. House in Iowa 2000s

Representatives to the U.S. House from Iowa
Representative	Party	Years Served
Steve King	Republican	2003-2021
Bruce Braley	Democratic	2007-2015
Dave Loebsack	Democratic	2007-2021
Rod Blum	Republican	2015-2019
David Young	Republican	2015-2019
Abby Finkenauer	Democratic	2019-2021
Cindy Axne	Democratic	2019-2023
Randy Feenstra	Republican	2021-present
Mariannette Miller-Meeks	Republican	2021-present
Ashley Hinson	Republican	2021-present
Zach Nunn	Republican	2023-present

1900s

Historical Representation to the U.S. House by Party in the 1900s from Iowa
Party	Total
Democratic	32
Republican	56
Total Representatives	88

Representatives to the U.S. House in Iowa 1900s

Representatives to the U.S. House from Iowa
Representative	Party	Years Served
James P. Conner	Republican	1900–1909
Walter I. Smith	Republican	1900–1911
John N. W. Rumple	Republican	1901–1903
Martin Joseph Wade	Democratic	1903–1905
Benjamin P. Birdsall	Republican	1903–1909
Albert F. Dawson	Republican	1905–1911
Elbert H. Hubbard	Republican	1905–1912
Daniel W. Hamilton	Democratic	1907–1909
Charles A. Kennedy	Republican	1907–1921
William Darius Jamieson	Democratic	1909–1911
Nathan E. Kendall	Republican	1909–1913
Charles E. Pickett	Republican	1909–1913
Frank P. Woods	Republican	1909–1919
James William Good	Republican	1909–1921
Irvin S. Pepper	Democratic	1911–1913
Solomon F. Prouty	Republican	1911–1915
Horace Mann Towner	Republican	1911–1923
William R. Green	Republican	1911–1928
George Cromwell Scott	Republican	1912–1915 and 1917–1919
Maurice Connolly	Democratic	1913–1915
Sanford Kirkpatrick	Democratic	1913–1915
Henry Vollmer	Democratic	1914–1915
Thomas J. Steele	Democratic	1915–1917
Burton E. Sweet	Republican	1915–1923
Harry E. Hull	Republican	1915–1925
C. William Ramseyer	Republican	1915–1933
Cassius C. Dowell	Republican	1915–1935 and 1937–1940
William D. Boies	Republican	1919–1929
Lester J. Dickinson	Republican	1919–1931
Cyrenus Cole	Republican	1921–1933
William F. Kopp	Republican	1921–1933
Hiram Kinsman Evans	Republican	1923–1925
Thomas J. B. Robinson	Republican	1923–1933
F. Dickinson Letts	Republican	1925–1931
Lloyd Thurston	Republican	1925–1939
Earl W. Vincent	Republican	1928–1929
Ed H. Campbell	Republican	1929–1933
Charles Edward Swanson	Republican	1929–1933
Bernhard M. Jacobsen	Democratic	1931–1936
Fred C. Gilchrist	Republican	1931–1945
Albert C. Willford	Democratic	1933–1935
Guy Mark Gillette	Democratic	1933–1936
Edward C. Eicher	Democratic	1933–1938
Fred Biermann	Democratic	1933–1939
Otha Wearin	Democratic	1933–1939
Hubert Utterback	Democratic	1935–1937
John W. Gwynne	Republican	1935–1949
Vincent F. Harrington	Democratic	1937–1942
William S. Jacobsen	Democratic	1937–1943
Thomas E. Martin	Republican	1939–1955
Karl M. LeCompte	Republican	1939–1959
Henry O. Talle	Republican	1939–1959
Ben F. Jensen	Republican	1939–1965
Robert K. Goodwin	Republican	1940–1941
Paul H. Cunningham	Republican	1941–1959
Harry E. Narey	Republican	1942–1943
Charles B. Hoeven	Republican	1943–1965
James I. Dolliver	Republican	1945–1957
Harold R. Gross	Republican	1949–1975
Fred Schwengel	Republican	1955–1965 and 1957–1973
Merwin Coad	Democratic	1957–1963
Steven V. Carter	Democratic	1959
Leonard G. Wolf	Democratic	1959–1961
John Henry Kyl	Republican	1959–1965 and 1967–1973
Neal Smith	Democratic	1959–1995
James E. Bromwell	Republican	1961–1965
Bert Bandstra	Democratic	1965–1967
Stanley L. Greigg	Democratic	1965–1967
John R. Hansen	Democratic	1965–1967
John R. Schmidhauser	Democratic	1965–1967
John Culver	Democratic	1965–1975
Wiley Mayne	Republican	1967–1975
William J. Scherle	Republican	1967–1975
Edward Mezvinsky	Democratic	1973–1977
Mike Blouin	Democratic	1975–1979
Chuck Grassley	Republican	1975–1981
Tom Harkin	Democratic	1975–1985
Berkley Bedell	Democratic	1975–1987
Jim Leach	Republican	1977–2007
Tom Tauke	Republican	1979–1991
T. Cooper Evans	Republican	1981–1987
Jim Ross Lightfoot	Republican	1985–1997
David R. Nagle	Democratic	1987–1993
Fred Grandy	Republican	1987–1995
Jim Nussle	Republican	1991–2007
Greg Ganske	Republican	1995–2003
Tom Latham	Republican	1995-2015
Leonard Boswell	Democratic	1997-2013

1800s

Historical Representation to the U.S. House by Party in the 1800s from Iowa
Party	Total
Democratic	18
Republican	66
Whig	2
Oppositionist	1
Greenbacker	3
Total Representatives	90

Representatives to the U.S. House from Iowa
Representative	Party	Years Served
S. Clinton Hastings	Democratic	1846–1847
Shepherd Leffler	Democratic	1846–1851
William Thompson	Democratic	1847–1850
Daniel F. Miller	Whig	1850–1851
Lincoln Clark	Democratic	1851–1853
Bernhart Henn	Democratic	1851–1855
John P. Cook	Whig	1853–1855
Augustus Hall	Democratic	1855–1857
James Thorington	Oppositionist	1855–1857
Timothy Davis	Republican	1857–1859
Samuel Curtis	Republican	1857–1861
William Vandever	Republican	1859–1861
James Falconer Wilson	Republican	1861–1869
Josiah B. Grinnell	Republican	1863–1867
John A. Kasson	Republican	1863–1867, 1873–1877, and 1881-1884
Asahel W. Hubbard	Republican	1863–1869
Hiram Price	Republican	1863–1869 and 1877–1881
William B. Allison	Republican	1863–1871
Grenville M. Dodge	Republican	1867–1869
William Loughridge	Republican	1867–1871 and 1873–1875
William Smyth	Republican	1869–1870
Charles Pomeroy	Republican	1869–1871
Francis W. Palmer	Republican	1869–1873
George W. McCrary	Republican	1869–1877
William P. Wolf	Republican	1870–1871
Madison M. Walden	Republican	1871–1873
Aylett R. Cotton	Republican	1871–1875
William G. Donnan	Republican	1871–1875
Jackson Orr	Republican	1871–1875
James W. McDill	Republican	1873–1877
Henry O. Pratt	Republican	1873–1877
James Wilson	Republican	1873–1877 and 1883–1885
Lucien Lester Ainsworth	Democratic	1875–1877
John Q. Tufts	Republican	1875–1877
S. Addison Oliver	Republican	1875–1879
Ezekiel S. Sampson	Republican	1875–1879
Theodore W. Burdick	Republican	1877–1879
Rush Clark	Republican	1877–1879
Henry J. B. Cummings	Republican	1877–1879
Joseph C. Stone	Republican	1877–1879
William F. Sapp	Republican	1877–1881
Nathaniel C. Deering	Republican	1877–1883
Edward H. Gillette	Greenbacker	1879–1881
James B. Weaver	Greenbacker	1879–1881 and 1885–1889
Cyrus C. Carpenter	Republican	1879–1883
William George Thompson	Republican	1879–1883
Thomas Updegraff	Republican	1879–1883 and 1893–1899
Moses A. McCoid	Republican	1879–1885
Marsena E. Cutts	Republican	1881–1883
Sewall S. Farwell	Republican	1881–1883
William P. Hepburn	Republican	1881–1887 and 1893–1909
John C. Cook	Democratic	1883–1835
William H. M. Pusey	Democratic	1883–1885
Luman Hamlin Weller	Greenbacker	1883–1885
Jeremiah H. Murphy	Democratic	1883–1887
Adoniram J. Holmes	Republican	1883–1889
Isaac S. Struble	Republican	1883–1891
David B. Henderson	Republican	1883–1903
Hiram Y. Smith	Republican	1884–1885
Benjamin T. Frederick	Democratic	1885–1887
Benton J. Hall	Democratic	1885–1887
William E. Fuller	Republican	1885–1889
Joseph Lyman	Republican	1885–1889
Edwin H. Conger	Republican	1885–1890
Albert R. Anderson	Republican	1887–1889
Daniel Kerr	Republican	1887–1891
John H. Gear	Republican	1887–1891 and 1893–1895
Walter I. Hayes	Democratic	1887–1895
Joseph R. Reed	Republican	1889–1891
Joseph H. Sweney	Republican	1889–1891
John F. Lacey	Republican	1889–1891 and 1893–1907
James P. Flick	Republican	1889–1893
Jonathan P. Dolliver	Republican	1889–1900
Edward R. Hays	Republican	1890–1891
Thomas Bowman	Democratic	1891–1893
Walter H. Butler	Democratic	1891–1893
John Taylor Hamilton	Democratic	1891–1893
John J. Seerley	Democratic	1891–1893
Frederick E. White	Democratic	1891–1893
George D. Perkins	Republican	1891–1899
John A. T. Hull	Republican	1891–1911
Alva L. Hager	Republican	1893–1899
Robert G. Cousins	Republican	1893–1909
Samuel M. Clark	Republican	1895–1899
George M. Curtis	Republican	1895–1899
Smith McPherson	Republican	1899–1900
Joseph R. Lane	Republican	1899–1901
Lot Thomas	Republican	1899–1905
Thomas Hedge	Republican	1899–1907
Gilbert N. Haugen	Republican	1899–1933

Footnotes

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Iowa's current delegation to the United States Congress

Senators

Joni Ernst (R)

Chuck Grassley (R)

Representatives

District 1

Mariannette Miller-Meeks (R)

District 2

Ashley Hinson (R)

District 3

Zach Nunn (R)

District 4

Randy Feenstra (R)

Republican Party (6)