Iowa's 3rd congressional district
Interactive map of district boundaries since January 3, 2023
Representative	Zach Nunn R–Bondurant
Distribution	73.07% urban 26.93% rural
Population (2024)	837,909
Median household income	$80,284[1]
Ethnicity	78.8%White 8.1%Hispanic 5.0%Black 3.8%Asian 3.6%Two or more races 0.6% other
Cook PVI	R+2[2]

Iowa's 3rd congressional district is acongressional district in theU.S. state ofIowa that covers its southwestern quadrant, which roughly consists of an area stretching fromDes Moines to the borders withMissouri.

From 2013 to 2023, the district covered the southwestern corner of the state, from theDes Moines metropolitan area on the northeastern end to the greaterCouncil Bluffs area on the southwestern end.

The district has been represented in theUnited States House of Representatives byRepublicanZach Nunn since 2023. With aCook Partisan Voting Index rating of R+2, it is the least Republican leaning district of Iowa’s four congressional districts, a state currently represented in Congress only by Republicans.^[2] It is also the wealthiest congressional district in the state ofIowa.^[3]

The 3rd districts includes the entirety of the following counties:^[6]

Representative	Party	Years	Cong ress	Electoral history	Location
District created March 4, 1863
William B. Allison (Dubuque)	Republican	March 4, 1863 – March 3, 1871	38th 39th 40th 41st	Elected in 1862. Re-elected in 1864. Re-elected in 1866. Re-elected in 1868. Retired torun for U.S. Senator.	1863–1873 [data missing]
William G. Donnan (Independence)	Republican	March 4, 1871 – March 3, 1875	42nd 43rd	Elected in 1870. Re-elected in 1872. Retired.
					1873–1883 [data missing]
Lucien L. Ainsworth (West Union)	Democratic	March 4, 1875 – March 3, 1877	44th	Elected in 1874. Retired.
Theodore W. Burdick (Decorah)	Republican	March 4, 1877 – March 3, 1879	45th	Elected in 1876. Retired.
Thomas Updegraff (McGregor)	Republican	March 4, 1879 – March 3, 1883	46th 47th	Elected in 1878. Re-elected in 1880. Redistricted to the4th district and lost re-election there.
David B. Henderson (Dubuque)	Republican	March 4, 1883 – March 3, 1903	48th 49th 50th 51st 52nd 53rd 54th 55th 56th 57th	Elected in 1882. Re-elected in 1884. Re-elected in 1886. Re-elected in 1888. Re-elected in 1890. Re-elected in 1892. Re-elected in 1894. Re-elected in 1896. Re-elected in 1898. Re-elected in 1900. Renominated but withdrew prior to election.	1883–1887 Black Hawk,Bremer,Buchanan,Butler,Delaware,Dubuque, andGrundy counties
					1887–1933 Black Hawk,Bremer,Buchanan,Butler,Delaware,Dubuque,Franklin,Hardin, andWright counties
Benjamin P. Birdsall (Clarion)	Republican	March 4, 1903 – March 3, 1909	58th 59th 60th	Elected in 1902. Re-elected in 1904. Re-elected in 1906. Retired.
Charles E. Pickett (Waterloo)	Republican	March 4, 1909 – March 3, 1913	61st 62nd	Elected in 1908. Re-elected in 1910. Lost re-election.
Maurice Connolly (Dubuque)	Democratic	March 4, 1913 – March 3, 1915	63rd	Elected in 1912. Retired torun for U.S. Senator.
Burton E. Sweet (Waverly)	Republican	March 4, 1915 – March 3, 1923	64th 65th 66th 67th	Elected in 1914. Re-elected in 1916. Re-elected in 1918. Re-elected in 1920. Retired torun for U.S. Senator.
Thomas J. B. Robinson (Hampton)	Republican	March 4, 1923 – March 3, 1933	68th 69th 70th 71st 72nd	Elected in 1922. Re-elected in 1924. Re-elected in 1926. Re-elected in 1928. Re-elected in 1930. Lost re-election.
Albert C. Willford (Waterloo)	Democratic	March 4, 1933 – January 3, 1935	73rd	Elected in 1932. Lost re-election.	1933–1943 [data missing]
John W. Gwynne (Waterloo)	Republican	January 3, 1935 – January 3, 1949	74th 75th 76th 77th 78th 79th 80th	Elected in 1934. Re-elected in 1936. Re-elected in 1938. Re-elected in 1940. Re-elected in 1942. Re-elected in 1944. Re-elected in 1946. Lost renomination.
					1943–1963 [data missing]
Harold R. Gross (Waterloo)	Republican	January 3, 1949 – January 3, 1975	81st 82nd 83rd 84th 85th 86th 87th 88th 89th 90th 91st 92nd 93rd	Elected in 1948. Re-elected in 1950. Re-elected in 1952. Re-elected in 1954. Re-elected in 1956. Re-elected in 1958. Re-elected in 1960. Re-elected in 1962. Re-elected in 1964. Re-elected in 1966. Re-elected in 1968. Re-elected in 1970. Re-elected in 1972. Retired.
					1963–1973 [data missing]
					1973–1983 [data missing]
Chuck Grassley (New Hartford)	Republican	January 3, 1975 – January 3, 1981	94th 95th 96th	Elected in 1974. Re-elected in 1976. Re-elected in 1978. Retired torun for U.S. Senator.
T. Cooper Evans (Grundy Center)	Republican	January 3, 1981 – January 3, 1987	97th 98th 99th	Elected in 1980. Re-elected in 1982. Re-elected in 1984. Retired.
					1983–1993 [data missing]
David R. Nagle (Cedar Rapids)	Democratic	January 3, 1987 – January 3, 1993	100th 101st 102nd	Elected in 1986. Re-elected in 1988. Re-elected in 1990. Redistricted to the2nd district and lost re-election.
Jim R. Lightfoot (Shenandoah)	Republican	January 3, 1993 – January 3, 1997	103rd 104th	Redistricted from the5th district andre-elected in 1992. Re-elected in 1994. Retired torun for U.S. Senator.	1993–2003 [data missing]
Leonard Boswell (Des Moines)	Democratic	January 3, 1997 – January 3, 2013	105th 106th 107th 108th 109th 110th 111th 112th	Elected in 1996. Re-elected in 1998. Re-elected in 2000. Re-elected in 2002. Re-elected in 2004. Re-elected in 2006. Re-elected in 2008. Re-elected in 2010. Lost re-election.
					2003–2013
Tom Latham (Clive)	Republican	January 3, 2013 – January 3, 2015	113th	Redistricted from the4th district andre-elected in 2012. Retired.	2013–2023
David Young (Van Meter)	Republican	January 3, 2015 – January 3, 2019	114th 115th	Elected in 2014. Re-elected in 2016. Lost re-election.
Cindy Axne (West Des Moines)	Democratic	January 3, 2019 – January 3, 2023	116th 117th	Elected in 2018. Re-elected in 2020. Lost re-election.
Zach Nunn (Bondurant)	Republican	January 3, 2023 – present	118th 119th	Elected in 2022. Re-elected in 2024.	2023–present:

• Iowa's congressional districts
• List of United States congressional districts
• Redistricting in the United States

General

Specific

• Martis, Kenneth C. (1989).The Historical Atlas of Political Parties in the United States Congress. New York: Macmillan Publishing Company.
• Martis, Kenneth C. (1982).The Historical Atlas of United States Congressional Districts. New York: Macmillan Publishing Company.
• Congressional Biographical Directory of the United States 1774–present

41°12′34″N94°38′25″W / 41.20944°N 94.64028°W /41.20944; -94.64028

• Congressional districts of Iowa
• Chuck Grassley

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• Articles with short description
• Short description is different from Wikidata
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• Pages using the Kartographer extension