Iowa's 1st Congressional District
Iowa · IA-01
Iowa's 1st Congressional District is one of 4 U.S. House districts in Iowa, represented in Congress by Mariannette Miller-Meeks (Republican). It is home to roughly 798,572 people, with a median age of 38.8. The population is about 84% White. The median household income is $72,467, and 32% of adults 25 and older hold a bachelor’s degree or higher. In the 2024 presidential election it voted leaning Republican (R+8).
Representative
Current U.S. House member (source: house.gov).
Geography
IA-01 is shown in red. Click a neighboring district to open it, or zoom out to explore the country.
Covering 10,982 square miles, IA-01 is the 68th-largest of the 435 congressional districts by land area. With about 73 residents per square mile, it is a predominantly rural district. Its shape is irregular: the district's Polsby-Popper score of 0.29 ranks 206th of 435 nationally, where 1st is the most compact.
Presidential results
In the 2024 presidential election, 45% of IA-01 voters backed Kamala Harris and 54% Donald Trump — a R+8 margin. That is a 5.0-point shift toward the Republicans from 2020, when the district voted R+3.
Two-party presidential vote by district (source: The Downballot).
Who lives here
The median resident of the district is 38.8 years old; 22.2% of residents are under 18 and 17.9% are 65 or older. About 4.6% of residents were born outside the United States, and 7.3% speak a language other than English at home.
U.S. Census Bureau, American Community Survey (5-year estimates).
Economy & education
At $72,467, the district's median household income ranks 259th of 435 districts nationwide. The typical owner-occupied home is worth $200,438, and the median rent is $944 a month. 11.9% of residents live below the poverty line, and workers average a 22.2-minute commute (9.7% work from home).
U.S. Census Bureau, American Community Survey (5-year estimates).