Overview
- District ID
- ia-hd-021
- State
- Iowa
- Chamber
- Lower chamber
- District Code
- 021
- Land Area
- 382.2 sq mi
- Water Area
- 8.6 sq mi
Boundary
Boundary as GeoJSON
Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.
Counties
Showing all 2 counties
Places
Showing all 5 places
Overlapping Congressional Districts
| Congressional district | Population in both | Share of this district's population | Share of the congressional district's population | Share of this district's land |
|---|
| IA District 1 | 31,787 | 100.0% | 4.0% | 100.0% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 22,671
- Active Voters
- 19,353 (85.4%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 5,481 | 24.2% |
| Republican | 9,115 | 40.2% |
| Unaffiliated | 7,856 | 34.7% |
| Other parties | 219 | 1.0% |
| No party recorded | 0 | 0.0% |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 5,044 (22.2%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 17,832 (78.7%) | 648 (2.9%) | 1,724 (7.6%) |
| 2021–2022 | 13,053 (57.6%) | 1,462 (6.4%) | 2,235 (9.9%) |
| 2019–2020 | 16,473 (72.7%) | 2,548 (11.2%) | 2,545 (11.2%) |
| 2017–2018 | 12,314 (54.3%) | 1,719 (7.6%) | 1,419 (6.3%) |
| 2015–2016 | 13,425 (59.2%) | 797 (3.5%) | 501 (2.2%) |
| 2013–2014 | 9,788 (43.2%) | 283 (1.2%) | 1,304 (5.8%) |
| 2011–2012 | 12,046 (53.1%) | 709 (3.1%) | 1,689 (7.5%) |
Turnout counts today's registered voters with a counted ballot in the cycle's elections (the odd and even year), as a share of today's registered voters. Voters who have since left the rolls are not counted.
Browse the voter list for this district (premium access; sign-in required)
Source: Civitech voter file snapshot as of 01/20/2026. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".
Demographics
- Total Population
- 31,906 (± 585)
- Median Age
- 38.8
- Median Household Income
- $79,074 (± $5,260)
- High School Graduate or Higher (age 25+)
- 95.9%
- Bachelor's Degree or Higher (age 25+)
- 30.6%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 6,979 | 21.9% |
| 18 to 64 | 18,898 | 59.2% |
| 65 and over | 6,029 | 18.9% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 952 | 3.0% |
| White, not Hispanic | 29,265 | 91.7% |
| Black, not Hispanic | 300 | 0.9% |
| Asian, not Hispanic | 306 | 1.0% |
| American Indian / Alaska Native, not Hispanic | 10 | 0.0% |
| Native Hawaiian / Pacific Islander, not Hispanic | 0 | 0.0% |
| Some other race, not Hispanic | 54 | 0.2% |
| Two or more races, not Hispanic | 1,019 | 3.2% |
Source: U.S. Census Bureau, American Community Survey 2020-2024 ACS 5-year estimates (tables B01001, B01002, B01003, B03002, B15003, B19013) for this state legislative district. Estimates are survey-based; ± figures are 90% margins of error.
Citizen Voting Age Population
- Total Citizen Population
- 31,763
- Citizen Voting Age Population (CVAP)
- 24,784
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 30,934 | 97.4% |
| Hispanic | 829 | 2.6% |
| White | 29,534 | 93.0% |
| Black | 317 | 1.0% |
| Asian | 289 | 0.9% |
| American Indian / Alaska Native | 11 | 0.0% |
| Native Hawaiian / Pacific Islander | 1 | 0.0% |
| Two or More Races | 68 | 0.2% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 24,213 | 97.7% |
| Hispanic | 565 | 2.3% |
| White | 23,323 | 94.1% |
| Black | 405 | 1.6% |
| Asian | 326 | 1.3% |
| American Indian / Alaska Native | 120 | 0.5% |
| Native Hawaiian / Pacific Islander | 2 | 0.0% |
| Two or More Races | 46 | 0.2% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
