United States congressional delegations from Iowa

Since Iowa became a U.S. state in 1846, it has sent congressional delegations to the United States Senate and United States House of Representatives. Each state elects two senators to serve for six years, and members of the House to two-year terms. Before becoming a state, the Iowa Territory elected a non-voting delegate at-large to Congress from 1838 to 1846.

These are tables of congressional delegations from Iowa to the United States Senate and the United States House of Representatives.^[1]

Current delegation

Current U.S. senators from Iowa

Iowa

CPVI (2022):^[2]
R 6

Class II senator

Class III senator

Joni Ernst
(Junior senator)
(Red Oak)

Chuck Grassley
(Senior senator)
(New Hartford)

Party

Republican

Incumbent since

January 3, 2015

January 3, 1981

Iowa's current congressional delegation in the 118th Congress consists of its two senators and four representatives, all Republicans.

The current dean of the Iowa delegation is Senator and President pro tempore emeritus of the United States Senate Chuck Grassley, having served in the Senate since 1981 and in Congress since 1975.

Current U.S. representatives from Iowa
District	Member (Residence)^[3]	Party	Incumbent since	CPVI (2022)^[4]	District map
1st	Mariannette Miller-Meeks (LeClaire)	Republican	January 3, 2021	R 3
2nd	Ashley Hinson (Marion)	Republican	January 3, 2021	R 4
3rd	Zach Nunn (Bondurant)	Republican	January 3, 2023	R 3
4th	Randy Feenstra (Hull)	Republican	January 3, 2021	R 16

United States Senate

Class II senator	Congress
George Wallace Jones (D)	30th (1847–1849)	Augustus C. Dodge (D)
	31st (1849–1851)
	32nd (1851–1853)
	33rd (1853–1855)
	34th (1855–1857)	James Harlan (R)
	35th (1857–1859)
James W. Grimes (R)	36th (1859–1861)
	37th (1861–1863)
	38th (1863–1865)
	39th (1865–1867)
	39th (1865–1867)	Samuel J. Kirkwood (R)
	40th (1867–1869)	James Harlan (R)
	41st (1869–1871)
James B. Howell (R)	41st (1869–1871)
George G. Wright (R)	42nd (1871–1873)
	43rd (1873–1875)	William B. Allison (R)
	44th (1875–1877)
Samuel J. Kirkwood (R)	45th (1877–1879)
	46th (1879–1881)
	47th (1881–1883)
James W. McDill (R)	47th (1881–1883)
James F. Wilson (R)	48th (1883–1885)
	49th (1885–1887)
	50th (1887–1889)
	51st (1889–1891)
	52nd (1891–1893)
	53rd (1893–1895)
John H. Gear (R)	54th (1895–1897)
	55th (1897–1899)
	56th (1899–1901)
Jonathan P. Dolliver (R)	56th (1899–1901)
	57th (1901–1903)
	58th (1903–1905)
	59th (1905–1907)
	60th (1907–1909)
	60th (1907–1909)	Albert B. Cummins (R)
	61st (1909–1911)
Lafayette Young (R)	61st (1909–1911)
Lafayette Young (R)	62nd (1911–1913)
William S. Kenyon (R)	62nd (1911–1913)
	63rd (1913–1915)
	64th (1915–1917)
	65th (1917–1919)
	66th (1919–1921)
	67th (1921–1923)
Charles A. Rawson (R)
Smith W. Brookhart (R)
	68th (1923–1925)
	69th (1925–1927)
Daniel F. Steck (D)	69th (1925–1927)	David W. Stewart (R)
	70th (1927–1929)	Smith W. Brookhart (R)
	71st (1929–1931)
L. J. Dickinson (R)	72nd (1931–1933)
	73rd (1933–1935)	Louis Murphy (D)
	74th (1935–1937)	Louis Murphy (D)
	74th (1935–1937)	Guy Gillette (D)
Clyde L. Herring (D)	75th (1937–1939)
	76th (1939–1941)
	77th (1941–1943)
George A. Wilson (R)	78th (1943–1945)
	79th (1945–1947)	Bourke B. Hickenlooper (R)
	80th (1947–1949)
Guy Gillette (D)	81st (1949–1951)
	82nd (1951–1953)
	83rd (1953–1955)
Thomas E. Martin (R)	84th (1955–1957)
	85th (1957–1959)
	86th (1959–1961)
Jack Miller (R)	87th (1961–1963)
	88th (1963–1965)
	89th (1965–1967)
	90th (1967–1969)
	91st (1969–1971)	Harold Hughes (D)
	92nd (1971–1973)
Dick Clark (D)	93rd (1973–1975)
	94th (1975–1977)	John Culver (D)
	95th (1977–1979)
Roger Jepsen (R)	96th (1979–1981)
	97th (1981–1983)	Chuck Grassley (R)
	98th (1983–1985)
Tom Harkin (D)	99th (1985–1987)
	100th (1987–1989)
	101st (1989–1991)
	102nd (1991–1993)
	103rd (1993–1995)
	104th (1995–1997)
	105th (1997–1999)
	106th (1999–2001)
	107th (2001–2003)
	108th (2003–2005)
	109th (2005–2007)
	110th (2007–2009)
	111th (2009–2011)
	112th (2011–2013)
	113th (2013–2015)
Joni Ernst (R)	114th (2015–2017)
	115th (2017–2019)
	116th (2019–2021)
	117th (2021–2023)
	118th (2023–2025)

United States House of Representatives

1838–1846: 1 non-voting delegate

On July 4, 1838, the Iowa Territory was organized. Most of the area comprising the territory was originally part of the Louisiana Purchase and was a part of the Missouri Territory. When Missouri became a state in 1821, this area (along with the Dakotas) effectively became unorganized territory. The area was closed to white settlers until the 1830s, after the Black Hawk War ended. It was attached to the Michigan Territory on June 28, 1834, and was split off with the Wisconsin Territory in 1836 when Michigan became a state. The Iowa Territory was the "Iowa District" of western Wisconsin Territory – the region west of the Mississippi River. The original boundaries of the territory, as established in 1838, included part of Minnesota and parts of the Dakotas, covering about 194,000 square miles (500,000 km²) of land.

Starting on September 10, 1838, Iowa Territory sent a non-voting delegate to the House.

Years	Delegate from Territory's at-large district
September 10, 1838 – October 27, 1840	William W. Chapman (D)
October 28, 1840 – December 28, 1846	Augustus C. Dodge (D)

1846–1863: 2 seats

Following statehood on December 28, 1846, Iowa had two seats in the House. It elected both seats statewide at-large on a general ticket, until 1847, when it redistricted into two districts.

Congress	Elected on a general ticket
Congress	1st seat	2nd seat
29th (1845–1847)	Serranus C. Hastings (D)	Shepherd Leffler (D)
Congress	1st district	2nd district
30th (1847–1849)	William Thompson (D)	Shepherd Leffler (D)
31st (1849–1851)	William Thompson (D)
31st (1849–1851)	Daniel F. Miller (W)
32nd (1851–1853)	Bernhart Henn (D)	Lincoln Clark (D)
33rd (1853–1855)	Bernhart Henn (D)	John Parsons Cook (W)
34th (1855–1857)	Augustus Hall (D)	James Thorington (W)
35th (1857–1859)	Samuel Ryan Curtis (R)	Timothy Davis (R)
36th (1859–1861)		William Vandever (R)
37th (1861–1863)
37th (1861–1863)	James F. Wilson (R)

1863–1873: 6 seats

Following the 1860 census, Iowa was apportioned 6 seats.

Congress	1st district	2nd district	3rd district	4th district	5th district	6th district
38th (1863–1865)	James F. Wilson (R)	Hiram Price (R)	William B. Allison (R)	Josiah B. Grinnell (R)	John A. Kasson (R)	Asahel W. Hubbard (R)
39th (1865–1867)				Josiah B. Grinnell (R)	John A. Kasson (R)
40th (1867–1869)				William Loughridge (R)	Grenville M. Dodge (R)
41st (1869–1871)	George W. McCrary (R)	William Smyth (R)			Francis W. Palmer (R)	Charles Pomeroy (R)
41st (1869–1871)		William P. Wolf (R)				Charles Pomeroy (R)
42nd (1871–1873)		Aylett R. Cotton (R)	William G. Donnan (R)	Madison M. Walden (R)		Jackson Orr (R)

1873–1883: 9 seats

Following the 1870 census, Iowa was apportioned 9 seats.

Congress	1st district	2nd district	3rd district	4th district	5th district	6th district	7th district	8th district	9th district
43rd (1873–1875)	George W. McCrary (R)	Aylett R. Cotton (R)	William G. Donnan (R)	Henry Otis Pratt (R)	James Wilson (R)	William Loughridge (R)	John A. Kasson (R)	James W. McDill (R)	Jackson Orr (R)
44th (1875–1877)	George W. McCrary (R)	John Q. Tufts (R)	L. L. Ainsworth (D)	Henry Otis Pratt (R)	James Wilson (R)	Ezekiel S. Sampson (R)	John A. Kasson (R)	James W. McDill (R)	S. Addison Oliver (R)
45th (1877–1879)	Joseph Champlin Stone (R)	Hiram Price (R)	Theodore Weld Burdick (R)	Nathaniel Cobb Deering (R)	Rush Clark (R)	Ezekiel S. Sampson (R)	Henry J. B. Cummings (R)	William Fletcher Sapp (R)	S. Addison Oliver (R)
46th (1879–1881)	Moses A. McCoid (R)		Thomas Updegraff (R)		Rush Clark (R)	James B. Weaver (GB)	Edward H. Gillette (GB)		Cyrus C. Carpenter (R)
46th (1879–1881)					William George Thompson (R)	James B. Weaver (GB)	Edward H. Gillette (GB)
47th (1881–1883)		Sewall S. Farwell (R)				Marsena E. Cutts (R)	John A. Kasson (R)	William P. Hepburn (R)
47th (1881–1883)		Sewall S. Farwell (R)				John C. Cook (D)	John A. Kasson (R)	William P. Hepburn (R)

1883–1933: 11 seats

Following the 1880 census, Iowa was apportioned 11 seats.

Congress	District
Congress	1st	2nd	3rd	4th	5th	6th	7th	8th	9th	10th	11th
48th (1883–1885)	Moses A. McCoid (R)	Jeremiah H. Murphy (D)	David B. Henderson (R)	Luman Hamlin Weller (GB)	Jim Wilson (R)	Marsena E. Cutts (R)	John A. Kasson (R)	William P. Hepburn (R)	William H. M. Pusey (D)	Adoniram J. Holmes (R)	Isaac S. Struble (R)
48th (1883–1885)	Moses A. McCoid (R)			Luman Hamlin Weller (GB)	Benjamin T. Frederick (D)	John Cook (D)	Hiram Smith (R)		William H. M. Pusey (D)
49th (1885–1887)	Ben Hall (D)			William E. Fuller (R)	Benjamin T. Frederick (D)	James B. Weaver (GB)	Edwin H. Conger (R)		Joseph Lyman (R)
50th (1887–1889)	John H. Gear (R)	Walter I. Hayes (D)		William E. Fuller (R)	Daniel Kerr (R)	James B. Weaver (GB)		Albert R. Anderson (IR)	Joseph Lyman (R)
51st (1889–1891)				Joseph Henry Sweney (R)		John F. Lacey (R)		James P. Flick (R)	Joseph Rea Reed (R)	Jonathan P. Dolliver (R)
51st (1889–1891)				Joseph Henry Sweney (R)		John F. Lacey (R)	Edward Hays (R)		Joseph Rea Reed (R)
52nd (1891–1893)	John J. Seerley (D)			Walter H. Butler (D)	John Taylor Hamilton (D)	Frederick E. White (D)	John A. T. Hull (R)		Thomas Bowman (D)		George D. Perkins (R)
53rd (1893–1895)	John Gear (R)			Thomas Updegraff (R)	Robert G. Cousins (R)	John F. Lacey (R)		William P. Hepburn (R)	Alva L. Hager (R)
54th (1895–1897)	Samuel M. Clark (R)	George M. Curtis (R)
55th (1897–1899)	Samuel M. Clark (R)	George M. Curtis (R)
56th (1899–1901)	Thomas Hedge (R)	Joe Lane (R)		Gilbert N. Haugen (R)					Smith McPherson (R)		Lot Thomas (R)
56th (1899–1901)		Joe Lane (R)							Walter I. Smith (R)	James P. Conner (R)
57th (1901–1903)		John Rumple (R)
58th (1903–1905)		Martin Wade (D)	Benjamin P. Birdsall (R)
59th (1905–1907)		Albert F. Dawson (R)									Elbert H. Hubbard (R)
60th (1907–1909)	Charles A. Kennedy (R)					Daniel W. Hamilton (D)
61st (1909–1911)			Charles E. Pickett (R)		James W. Good (R)	Nathan E. Kendall (R)		William Darius Jamieson (D)		Frank P. Woods (R)
62nd (1911–1913)		Irvin S. Pepper (D)					Solomon F. Prouty (R)	Horace M. Towner (R)
62nd (1911–1913)									William R. Green (R)		George C. Scott (R)
63rd (1913–1915)			Maurice Connolly (D)			Sanford Kirkpatrick (D)
63rd (1913–1915)		Henry Vollmer (D)	Maurice Connolly (D)			Sanford Kirkpatrick (D)
64th (1915–1917)		Harry E. Hull (R)	Burton E. Sweet (R)			C. William Ramseyer (R)	Cassius C. Dowell (R)				Thomas J. Steele (D)
65th (1917–1919)											George C. Scott (R)
66th (1919–1921)										L. J. Dickinson (R)	William D. Boies (R)
67th (1921–1923)	William F. Kopp (R)
67th (1921–1923)					Cyrenus Cole (R)
68th (1923–1925)			Thomas J. B. Robinson (R)
68th (1923–1925)								Hiram Evans (R)
69th (1925–1927)		F. Dickinson Letts (R)						Lloyd Thurston (R)
70th (1927–1929)
70th (1927–1929)									Earl Vincent (R)
71st (1929–1931)									Charles E. Swanson (R)		Ed H. Campbell (R)
72nd (1931–1933)		Bernhard M. Jacobsen (D)							Charles E. Swanson (R)	Fred C. Gilchrist (R)	Ed H. Campbell (R)

1933–1943: 9 seats

Following the 1930 census, Iowa was apportioned 9 seats.

Congress	District
Congress	1st	2nd	3rd	4th	5th	6th	7th	8th	9th
73rd (1933–1935)	Edward C. Eicher (D)	Bernhard M. Jacobsen (D)	Albert Willford (D)	Fred Biermann (D)	Lloyd Thurston (R)	Cassius C. Dowell (R)	Otha Wearin (D)	Fred C. Gilchrist (R)	Guy Gillette (D)
74th (1935–1937)		Bernhard M. Jacobsen (D)	John W. Gwynne (R)			Hubert Utterback (D)			Guy Gillette (D)
75th (1937–1939)		William S. Jacobsen (D)				Cassius C. Dowell (R)			Vincent F. Harrington (D)
76th (1939–1941)	Thomas E. Martin (R)			Henry O. Talle (R)	Karl M. LeCompte (R)	Cassius C. Dowell (R)	Ben F. Jensen (R)
77th (1941–1943)						Paul Cunningham (R)
77th (1941–1943)						Paul Cunningham (R)			Harry Narey (R)

1943–1963: 8 seats

Following the 1940 census, Iowa was apportioned 8 seats.

Congress	District
Congress	1st	2nd	3rd	4th	5th	6th	7th	8th
78th (1943–1945)	Thomas E. Martin (R)	Henry O. Talle (R)	John W. Gwynne (R)	Karl M. LeCompte (R)	Paul Cunningham (R)	Fred C. Gilchrist (R)	Ben F. Jensen (R)	Charles B. Hoeven (R)
79th (1945–1947)						James I. Dolliver (R)
80th (1947–1949)
81st (1949–1951)			H. R. Gross (R)
82nd (1951–1953)
83rd (1953–1955)
84th (1955–1957)	Fred Schwengel (R)
85th (1957–1959)						Merwin Coad (D)
86th (1959–1961)		Leonard G. Wolf (D)		Steven V. Carter (D)	Neal Smith (D)
87th (1961–1963)		James E. Bromwell (R)		John Henry Kyl (R)	Neal Smith (D)

1963–1973: 7 seats

Following the 1960 census, Iowa was apportioned 7 seats.

Congress	District
Congress	1st	2nd	3rd	4th	5th	6th	7th
88th (1963–1965)	Fred Schwengel (R)	James E. Bromwell (R)	H. R. Gross (R)	John Henry Kyl (R)	Neal Smith (D)	Charles B. Hoeven (R)	Ben F. Jensen (R)
89th (1965–1967)	John R. Schmidhauser (D)	John Culver (D)		Bert Bandstra (D)		Stanley L. Greigg (D)	John R. Hansen (D)
90th (1967–1969)	Fred Schwengel (R)			John Henry Kyl (R)		Wiley Mayne (R)	William J. Scherle (R)
91st (1969–1971)
92nd (1971–1973)

1973–1993: 6 seats

Following the 1970 census, Iowa was apportioned 6 seats.

Congress	1st district	2nd district	3rd district	4th district	5th district	6th district
93rd (1973–1975)	Edward Mezvinsky (D)	John Culver (D)	H. R. Gross (R)	Neal Smith (D)	William Scherle (R)	Wiley Mayne (R)
94th (1975–1977)	Edward Mezvinsky (D)	Mike Blouin (D)	Chuck Grassley (R)		Tom Harkin (D)	Berkley Bedell (D)
95th (1977–1979)	Jim Leach (R)	Mike Blouin (D)
96th (1979–1981)		Tom Tauke (R)
97th (1981–1983)			T. Cooper Evans (R)
98th (1983–1985)
99th (1985–1987)					Jim Ross Lightfoot (R)
100th (1987–1989)			Dave Nagle (D)			Fred Grandy (R)
101st (1989–1991)
102nd (1991–1993)		Jim Nussle (R)

1993–2013: 5 seats

Following the 1990 census, Iowa was apportioned 5 seats.

Congress	1st district	2nd district	3rd district	4th district	5th district
103rd (1993–1995)	Jim Leach (R)	Jim Nussle (R)	Jim Ross Lightfoot (R)	Neal Smith (D)	Fred Grandy (R)
104th (1995–1997)			Jim Ross Lightfoot (R)	Greg Ganske (R)	Tom Latham (R)
105th (1997–1999)			Leonard Boswell (D)
106th (1999–2001)
107th (2001–2003)
108th (2003–2005)	Jim Nussle (R)	Jim Leach (R)		Tom Latham (R)	Steve King (R)
109th (2005–2007)	Jim Nussle (R)	Jim Leach (R)
110th (2007–2009)	Bruce Braley (D)	Dave Loebsack (D)
111th (2009–2011)
112th (2011–2013)

2013–present: 4 seats

Following the 2010 census, Iowa was apportioned 4 seats.

Congress	1st district	2nd district	3rd district	4th district
113th (2013–2015)	Bruce Braley (D)	Dave Loebsack (D)	Tom Latham (R)	Steve King (R)
114th (2015–2017)	Rod Blum (R)		David Young (R)
115th (2017–2019)	Rod Blum (R)		David Young (R)
116th (2019–2021)	Abby Finkenauer (D)		Cindy Axne (D)
117th (2021–2023)	Ashley Hinson (R)	Mariannette Miller-Meeks (R)	Cindy Axne (D)	Randy Feenstra (R)
118th (2023–2025)	Mariannette Miller-Meeks (R)	Ashley Hinson (R)	Zach Nunn (R)	Randy Feenstra (R)

Key

Democratic (D)
Greenback (GB)
Republican (R)
Whig (W)

References

^ "The national atlas". nationalatlas.gov. Archived from the original on February 22, 2014. Retrieved February 2, 2014.
^ "2022 Cook PVI: State Map and List". Cook Political Report. Retrieved 2023-01-08.
^ "Office of the Clerk, U.S. House of Representatives". clerk.house.gov. Retrieved 2022-01-06.
^ "2022 Cook PVI: District Map and List". Cook Political Report. Retrieved 2023-01-08.

[1] "The national atlas". nationalatlas.gov. Archived from the original on February 22, 2014. Retrieved February 2, 2014.

[2] "2022 Cook PVI: State Map and List". Cook Political Report. Retrieved 2023-01-08.

[3] "Office of the Clerk, U.S. House of Representatives". clerk.house.gov. Retrieved 2022-01-06.

[4] "2022 Cook PVI: District Map and List". Cook Political Report. Retrieved 2023-01-08.

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