Overview
- District ID
- ia-sd-010
- State
- Iowa
- Chamber
- Upper chamber (state senate)
- District Code
- 010
- Land Area
- 41.9 sq mi
- Water Area
- 2.92 sq mi
Boundary
Boundary as GeoJSON
Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.
Counties
Showing all 1 county
Places
Showing all 2 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 | 63,666 | 100.0% | 8.0% | 100.0% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 37,557
- Active Voters
- 29,105 (77.5%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 10,530 | 28.0% |
| Republican | 13,395 | 35.7% |
| Unaffiliated | 12,984 | 34.6% |
| Other parties | 648 | 1.7% |
| No party recorded | 0 | 0.0% |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 8,142 (21.7%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 25,524 (68.0%) | 486 (1.3%) | 1,161 (3.1%) |
| 2021–2022 | 15,146 (40.3%) | 1,497 (4.0%) | 2,436 (6.5%) |
| 2019–2020 | 23,137 (61.6%) | 3,202 (8.5%) | 3,086 (8.2%) |
| 2017–2018 | 16,006 (42.6%) | 1,414 (3.8%) | 1,195 (3.2%) |
| 2015–2016 | 18,279 (48.7%) | 635 (1.7%) | 1,278 (3.4%) |
| 2013–2014 | 10,627 (28.3%) | 271 (0.7%) | 1,252 (3.3%) |
| 2011–2012 | 15,555 (41.4%) | 442 (1.2%) | 1,743 (4.6%) |
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
- 63,247 (± 539)
- Median Age
- 38.9
- Median Household Income
- $63,400 (± $2,541)
- High School Graduate or Higher (age 25+)
- 88.2%
- Bachelor's Degree or Higher (age 25+)
- 19.4%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 13,897 | 22.0% |
| 18 to 64 | 38,318 | 60.6% |
| 65 and over | 11,032 | 17.4% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 7,702 | 12.2% |
| White, not Hispanic | 51,104 | 80.8% |
| Black, not Hispanic | 1,431 | 2.3% |
| Asian, not Hispanic | 688 | 1.1% |
| American Indian / Alaska Native, not Hispanic | 165 | 0.3% |
| Native Hawaiian / Pacific Islander, not Hispanic | 77 | 0.1% |
| Some other race, not Hispanic | 171 | 0.3% |
| Two or more races, not Hispanic | 1,909 | 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
- 61,340
- Citizen Voting Age Population (CVAP)
- 47,518
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 54,985 | 89.6% |
| Hispanic | 6,353 | 10.4% |
| White | 51,552 | 84.0% |
| Black | 1,420 | 2.3% |
| Asian | 417 | 0.7% |
| American Indian / Alaska Native | 166 | 0.3% |
| Native Hawaiian / Pacific Islander | 73 | 0.1% |
| Two or More Races | 151 | 0.2% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 43,809 | 92.2% |
| Hispanic | 3,707 | 7.8% |
| White | 41,553 | 87.4% |
| Black | 1,261 | 2.7% |
| Asian | 409 | 0.9% |
| American Indian / Alaska Native | 512 | 1.1% |
| Native Hawaiian / Pacific Islander | 46 | 0.1% |
| Two or More Races | 87 | 0.2% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
