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Iowa's 1st Congressional District (IA-1)
Iowa's 1st Congressional District is represented by Mariannette Miller-Meeks (R), in office since 2021. One of 4 House seats in Iowa; on the ballot November 3, 2026 like every House seat.
Data as of September 21, 2026. Boundaries from the U.S. Census Bureau (119th Congress).
Quick Answer
- Representative
- Mariannette Miller-Meeks (R) — since 2021
- Term Ends
- January 3, 2027 — 99 days
- Next Election
- November 3, 2026 — rated Toss-up
- Iowa Primary
- June 2, 2026
- Senators
- Chuck Grassley (R), Joni Ernst (R)
- Land Area
- 10,845 sq mi
Who Represents IA-1?
Republican · in office since 2021 · 5 yrs in Congress · term ends January 3, 2027
Committees: Energy and Commerce Committee, Veterans' Affairs Committee
Voting record this session: cast 312 of 314 roll calls (99.4% participation), with the Republican majority on 96.1% of party-divided votes. Full record →
Iowa's two senators, who represent the whole state including this district: Chuck Grassley R and Joni Ernst R.
Map of IA-1
Iowa's 1st Congressional District within Iowa. Current boundaries — the lines used to elect the 119th Congress.
IA-1 in the 2026 Election
Every House seat is on the ballot on November 3, 2026, IA-1 included. Iowa held its primary on June 2, 2026. Sabato's Crystal Ball (Sept. 10, 2026) rates the race Toss-up, a Republican-held seat.
Districts Bordering IA-1
Computed from the shared boundaries in the Census geometry. 2 in Iowa and 4 across the state line.
- IA-2 — Ashley Hinson R
- IA-3 — Zachary Nunn R
- IL-15 — Mary Miller R
- IL-16 — Darin LaHood R
- IL-17 — Eric Sorensen D
- MO-6 — Sam Graves R
Frequently Asked Questions
Who is the representative for Iowa's 1st Congressional District?
Mariannette Miller-Meeks (Republican) represents IA-1 as of September 21, 2026. In office since 2021; current term ends January 3, 2027.
When is the next election for IA-1?
November 3, 2026 — every House seat is up every two years. Iowa's primary was June 2, 2026. Sabato's Crystal Ball (Sept. 10, 2026) rates the race Toss-up.
How many congressional districts does Iowa have?
4, under the 2020 census apportionment in effect until 2033. IA-1 is the 1st of them. See the full Iowa delegation at congresscountdown.com/states/iowa.
Who are the senators for IA-1?
Senators represent the whole state, so IA-1's senators are Iowa's: Chuck Grassley (R) and Joni Ernst (R).
Related Resources
Who Is My Representative?
Enter an address or ZIP code to find your U.S. House representative and both senators.
What Is a Congressional District?
How districts are drawn, redistricting, apportionment, and finding your district.
Who Controls Congress After 2026?
Live balance of power — the Senate map, what each party needs, and results as races are called.