Overview
- District ID
- ia-sd-015
- State
- Iowa
- Chamber
- Upper chamber (state senate)
- District Code
- 015
- Land Area
- 38.4 sq mi
- Water Area
- 1.42 sq mi
Boundary
Boundary as GeoJSON
Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.
Counties
| County | Overlap | Share of district land | Share of county land |
|---|
| Polk County | 38.43 sq mi | 100.0% | 6.7% |
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 3 | 63,743 | 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
- 33,948
- Active Voters
- 26,661 (78.5%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 14,663 | 43.2% |
| Republican | 7,114 | 21.0% |
| Unaffiliated | 11,764 | 34.7% |
| Other parties | 407 | 1.2% |
| No party recorded | 0 | 0.0% |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 6,481 (19.1%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 24,378 (71.8%) | 1,350 (4.0%) | 302 (0.9%) |
| 2021–2022 | 16,053 (47.3%) | 3,910 (11.5%) | 1,561 (4.6%) |
| 2019–2020 | 23,612 (69.6%) | 5,048 (14.9%) | 1,488 (4.4%) |
| 2017–2018 | 16,689 (49.2%) | 3,940 (11.6%) | 516 (1.5%) |
| 2015–2016 | 18,103 (53.3%) | 1,674 (4.9%) | 358 (1.1%) |
| 2013–2014 | 11,364 (33.5%) | 1,771 (5.2%) | 923 (2.7%) |
| 2011–2012 | 15,879 (46.8%) | 239 (0.7%) | 291 (0.9%) |
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
- 63,061 (± 2,066)
- Median Age
- 35.0
- Median Household Income
- $67,176 (± $4,121)
- High School Graduate or Higher (age 25+)
- 85.1%
- Bachelor's Degree or Higher (age 25+)
- 22.4%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 15,542 | 24.6% |
| 18 to 64 | 40,322 | 63.9% |
| 65 and over | 7,197 | 11.4% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 13,158 | 20.9% |
| White, not Hispanic | 37,609 | 59.6% |
| Black, not Hispanic | 4,550 | 7.2% |
| Asian, not Hispanic | 4,809 | 7.6% |
| American Indian / Alaska Native, not Hispanic | 57 | 0.1% |
| Native Hawaiian / Pacific Islander, not Hispanic | 164 | 0.3% |
| Some other race, not Hispanic | 309 | 0.5% |
| Two or more races, not Hispanic | 2,405 | 3.8% |
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
- 58,191
- Citizen Voting Age Population (CVAP)
- 43,038
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 48,398 | 83.2% |
| Hispanic | 9,787 | 16.8% |
| White | 38,448 | 66.1% |
| Black | 4,200 | 7.2% |
| Asian | 3,997 | 6.9% |
| American Indian / Alaska Native | 56 | 0.1% |
| Native Hawaiian / Pacific Islander | 74 | 0.1% |
| Two or More Races | 140 | 0.2% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 38,222 | 88.8% |
| Hispanic | 4,813 | 11.2% |
| White | 31,831 | 74.0% |
| Black | 3,075 | 7.1% |
| Asian | 2,990 | 6.9% |
| American Indian / Alaska Native | 225 | 0.5% |
| Native Hawaiian / Pacific Islander | 53 | 0.1% |
| Two or More Races | 63 | 0.1% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
