Iowa has 4 congressional districts in the U.S. House of Representatives, making it a smaller delegation in Congress. The state’s current district boundaries were established following the 2020 Census redistricting process, which determined how the state’s population would be distributed across its House seats.
Iowa’s House delegation currently has 4 Republicans out of 4 seats. All 4 seats are up for election on November 3, 2026.
Iowa is also represented in the U.S. Senate by Joni Ernst (R) and Chuck Grassley (R). Statewide voters choose Iowa’s senators. Only the voters inside a district choose that district’s House member. Iowa is divided into 4 districts, and the one covering your address determines your House member and your ballot.
House Districts
4
Party Balance
4 R / 0 D
Population (2020)
3,190,369
U.S. Senators
Joni Ernst (R)
Chuck Grassley (R)
All congressional districts in this state, 119th Congress. Boundary data: U.S. Census Bureau TIGERweb. Map tiles: OpenStreetMap.
Find Your Iowa District
Enter your ZIP code to instantly find which Iowa congressional district you live in.
This page covers U.S. House districts only. Iowa also has state legislative districts, which are drawn separately and elect members of the state legislature. To find yours, use the USAGov directory of elected officials.
All Iowa Congressional Districts
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Learn More
Explore our resources on congressional districts, redistricting, and how to engage with your representatives.
Browse All 435 Districts →
What congressional district am I in? →
For the 2026 races in Iowa, including the districts to watch and the primary date, see 2026 Congressional Elections in Iowa.
2026 Senate race
Iowa has a U.S. Senate seat on the ballot on November 3, 2026. The seat is currently held by Joni Ernst (R), who is retiring, so this is an open seat. Iowa votes as one unit for Senate and as 4 separate districts for the House. For every 2026 Senate race, see the 2026 Senate elections tracker.
Learn more about Congress
Iowa representatives and contact details
Iowa has 4 congressional districts.
| District | Representative | Party | Contact |
|---|---|---|---|
| IA-1 1st | Mariannette Miller-Meeks | R Republican Party | 202-225-6576 Official website |
| IA-2 2nd | Ashley Hinson | R Republican Party | 202-225-2911 Official website |
| IA-3 3rd | Zachary Nunn | R Republican Party | 202-225-5476 Official website |
| IA-4 4th | Randy Feenstra | R Republican Party | 202-225-4426 Official website |
Iowa congressional delegation
Iowa has 6 seats in Congress: 4 in the U.S. House of Representatives and 2 in the U.S. Senate.
The House delegation has 4 Republicans.
House members by party
Republican (4)
Mariannette Miller-Meeks (District 1), Ashley Hinson (District 2), Zachary Nunn (District 3), Randy Feenstra (District 4)
Iowa in the U.S. Senate
Iowa is represented in the U.S. Senate by Chuck Grassley (Republican) and Joni Ernst (Republican).
Seats on the Iowa ballot this year are listed on the Iowa 2026 elections page.
Frequently Asked Questions
How many congressional districts does Iowa have?
Iowa has 4 congressional districts, each electing one member to the U.S. House of Representatives.
Who represents Iowa in the U.S. House of Representatives?
The U.S. Representatives from Iowa are: Mariannette Miller-Meeks (IA-1), Ashley Hinson (IA-2), Zachary Nunn (IA-3), Randy Feenstra (IA-4).
How do I find which Iowa congressional district I live in?
Use the lookup on the home page. If your ZIP code spans more than one district, it will ask for your street address.
When is the next election for Iowa U.S. House seats?
All 435 U.S. House seats are up for election every two years, in even-numbered years on the first Tuesday after the first Monday in November.
Districts by ZIP code in Iowa
Iowa covers 972 ZIP codes across its 4 districts. A ZIP code is a mail delivery route, not a political boundary, so the two do not line up. 119 of those ZIP codes fall in more than one district.
To get an exact answer for an address, use the lookup on the home page. A full street address resolves a split ZIP code; a five digit ZIP on its own cannot.
ZIP codes in Iowa that cross district lines include:
- 50002: districts 3rd, 4th
- 50006: districts 2nd, 4th
- 50020: districts 3rd, 4th
- 50022: districts 3rd, 4th
- 50025: districts 3rd, 4th
- 50027: districts 1st, 2nd
- 50028: districts 1st, 4th
- 50039: districts 3rd, 4th
- 50042: districts 3rd, 4th
- 50044: districts 1st, 3rd
- 50046: districts 3rd, 4th
- 50047: districts 1st, 3rd
Every district page on this site lists the full ZIP code set for that district. ZIP to district data comes from the U.S. Census Bureau block equivalency file for the 119th Congress.
Districts by major city in Iowa
Large cities often sit in more than one congressional district. These are the largest cities named on the district pages for Iowa, with the district or districts that cover each one.
- Ames: district 4th
- Ankeny: district 3rd
- Bettendorf: district 1st
- Cedar Rapids: district 2nd
- Clinton: district 1st
- Council Bluffs: district 4th
- Davenport: district 1st
- Des Moines: district 3rd
- Dubuque: district 2nd
- Iowa City: district 1st
- Marion: district 2nd
- Marshalltown: district 4th
- Sioux City: district 4th
- Urbandale: district 3rd
- Waterloo: district 2nd
- West Des Moines: district 3rd
City coverage is drawn from the district profiles on this site, which are based on U.S. Census Bureau data for the 119th Congress.
How many representatives does Iowa have?
Iowa has 4 seats in the U.S. House of Representatives, one for each congressional district. It also elects 2 U.S. senators, as every state does. The number of House seats is set by apportionment after each census.
Local surveillance camera contracts
Automated license plate reader contracts are approved locally, by city councils and county boards, not by Congress. 3 places in this state have a contract record documented from public sources on Who Approved This, an independent public-records project.
Iowa on the November 3, 2026 ballot
All 4 Iowa seats in the U.S. House are on the ballot on Tuesday, November 3, 2026. House terms run 2 years, so every seat is contested at each general election. Winners take office on January 3, 2027.
A U.S. Senate seat is also on the ballot in Iowa. It is held by Joni Ernst (Republican). In the 2026 race, the seat is open because the incumbent is retiring. All 35 Senate races in 2026.
Polling places in Iowa are open 7 a.m. to 8 p.m., local time. Registration status, polling place and sample ballot information for Iowa are on the official federal voter page: vote.gov.
What is on the ballot nationally on November 3, 2026
Last updated September 9, 2026.
Data last checked September 7, 2026.
Iowa results on election night
Iowa posts its own returns. Unofficial numbers appear on election night and certified results follow in the weeks after. Reach the Iowa election office through the Election Assistance Commission state directory, or through the official federal voter page for Iowa at vote.gov.
Numbers reported on election night are unofficial. Every state certifies its results on its own schedule, taking days to weeks. Provisional ballots are still being reviewed during that period, and states that accept mail ballots postmarked by election day are still receiving them. Margins in close races move after November 3.