Overview
- District ID
- ia-hd-010
- State
- Iowa
- Chamber
- Lower chamber
- District Code
- 010
- Land Area
- 1,394.9 sq mi
- Water Area
- 32.9 sq mi
Boundary
Boundary as GeoJSON
Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.
Counties
Showing all 4 counties
Places
Showing all 25 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 4 | 31,915 | 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
- 24,197
- Active Voters
- 21,172 (87.5%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 4,515 | 18.7% |
| Republican | 11,937 | 49.3% |
| Unaffiliated | 7,554 | 31.2% |
| Other parties | 191 | 0.8% |
| No party recorded | 0 | 0.0% |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 4,865 (20.1%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 19,426 (80.3%) | 256 (1.1%) | 1,704 (7.0%) |
| 2021–2022 | 14,207 (58.7%) | 942 (3.9%) | 2,576 (10.6%) |
| 2019–2020 | 18,150 (75.0%) | 1,946 (8.0%) | 3,521 (14.6%) |
| 2017–2018 | 13,734 (56.8%) | 1,105 (4.6%) | 2,424 (10.0%) |
| 2015–2016 | 15,338 (63.4%) | 405 (1.7%) | 1,521 (6.3%) |
| 2013–2014 | 10,970 (45.3%) | 530 (2.2%) | 1,736 (7.2%) |
| 2011–2012 | 13,627 (56.3%) | 911 (3.8%) | 2,432 (10.1%) |
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
- 32,109 (± 431)
- Median Age
- 46.6
- Median Household Income
- $75,771 (± $3,497)
- High School Graduate or Higher (age 25+)
- 95.9%
- Bachelor's Degree or Higher (age 25+)
- 27.1%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 6,770 | 21.1% |
| 18 to 64 | 17,130 | 53.3% |
| 65 and over | 8,209 | 25.6% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 879 | 2.7% |
| White, not Hispanic | 29,880 | 93.1% |
| Black, not Hispanic | 169 | 0.5% |
| Asian, not Hispanic | 175 | 0.5% |
| American Indian / Alaska Native, not Hispanic | 19 | 0.1% |
| Native Hawaiian / Pacific Islander, not Hispanic | 0 | 0.0% |
| Some other race, not Hispanic | 8 | 0.0% |
| Two or more races, not Hispanic | 979 | 3.0% |
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
- 31,856
- Citizen Voting Age Population (CVAP)
- 25,090
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 31,156 | 97.8% |
| Hispanic | 703 | 2.2% |
| White | 30,145 | 94.6% |
| Black | 170 | 0.5% |
| Asian | 120 | 0.4% |
| American Indian / Alaska Native | 21 | 0.1% |
| Native Hawaiian / Pacific Islander | 2 | 0.0% |
| Two or More Races | 109 | 0.3% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 24,714 | 98.5% |
| Hispanic | 375 | 1.5% |
| White | 24,084 | 96.0% |
| Black | 175 | 0.7% |
| Asian | 125 | 0.5% |
| American Indian / Alaska Native | 301 | 1.2% |
| Native Hawaiian / Pacific Islander | 2 | 0.0% |
| Two or More Races | 27 | 0.1% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
