Overview
- District ID
- ia-hd-012
- State
- Iowa
- Chamber
- Lower chamber
- District Code
- 012
- Land Area
- 1,435.3 sq mi
- Water Area
- 1.66 sq mi
Boundary
Boundary as GeoJSON
Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.
Counties
Showing all 3 counties
Places
Showing top 25 of 26 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 | 31,818 | 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
- 19,367
- Active Voters
- 16,175 (83.5%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 3,465 | 17.9% |
| Republican | 9,775 | 50.5% |
| Unaffiliated | 5,992 | 30.9% |
| Other parties | 135 | 0.7% |
| No party recorded | 0 | 0.0% |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 3,475 (17.9%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 14,754 (76.2%) | 189 (1.0%) | 2,723 (14.1%) |
| 2021–2022 | 10,315 (53.3%) | 574 (3.0%) | 2,040 (10.5%) |
| 2019–2020 | 14,143 (73.0%) | 1,258 (6.5%) | 3,213 (16.6%) |
| 2017–2018 | 10,115 (52.2%) | 600 (3.1%) | 1,033 (5.3%) |
| 2015–2016 | 11,553 (59.7%) | 306 (1.6%) | 1,507 (7.8%) |
| 2013–2014 | 7,832 (40.4%) | 287 (1.5%) | 1,871 (9.7%) |
| 2011–2012 | 10,099 (52.1%) | 555 (2.9%) | 1,660 (8.6%) |
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
- 31,538 (± 305)
- Median Age
- 41.2
- Median Household Income
- $66,695 (± $3,859)
- High School Graduate or Higher (age 25+)
- 89.1%
- Bachelor's Degree or Higher (age 25+)
- 20.1%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 7,731 | 24.5% |
| 18 to 64 | 17,400 | 55.2% |
| 65 and over | 6,407 | 20.3% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 5,677 | 18.0% |
| White, not Hispanic | 24,125 | 76.5% |
| Black, not Hispanic | 200 | 0.6% |
| Asian, not Hispanic | 403 | 1.3% |
| American Indian / Alaska Native, not Hispanic | 10 | 0.0% |
| Native Hawaiian / Pacific Islander, not Hispanic | 0 | 0.0% |
| Some other race, not Hispanic | 63 | 0.2% |
| Two or more races, not Hispanic | 1,060 | 3.4% |
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
- 29,724
- Citizen Voting Age Population (CVAP)
- 22,417
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 25,801 | 86.8% |
| Hispanic | 3,919 | 13.2% |
| White | 24,369 | 82.0% |
| Black | 201 | 0.7% |
| Asian | 363 | 1.2% |
| American Indian / Alaska Native | 4 | 0.0% |
| Native Hawaiian / Pacific Islander | 0 | 0.0% |
| Two or More Races | 156 | 0.5% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 20,218 | 90.2% |
| Hispanic | 2,199 | 9.8% |
| White | 19,269 | 86.0% |
| Black | 292 | 1.3% |
| Asian | 254 | 1.1% |
| American Indian / Alaska Native | 300 | 1.3% |
| Native Hawaiian / Pacific Islander | 2 | 0.0% |
| Two or More Races | 113 | 0.5% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
