Overview
- District ID
- ia-sd-021
- State
- Iowa
- Chamber
- Upper chamber (state senate)
- District Code
- 021
- Land Area
- 30.4 sq mi
- Water Area
- 0.18 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 | 30.60 sq mi | 100.0% | 5.3% |
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 | 63,965 | 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
- 50,765
- Active Voters
- 44,273 (87.2%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 14,151 | 27.9% |
| Republican | 17,582 | 34.6% |
| Unaffiliated | 18,532 | 36.5% |
| Other parties | 500 | 1.0% |
| No party recorded | 0 | 0.0% |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 13,871 (27.3%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 40,983 (80.7%) | 1,455 (2.9%) | 2,120 (4.2%) |
| 2021–2022 | 30,375 (59.8%) | 3,782 (7.5%) | 3,787 (7.5%) |
| 2019–2020 | 37,262 (73.4%) | 5,726 (11.3%) | 3,650 (7.2%) |
| 2017–2018 | 27,226 (53.6%) | 3,731 (7.3%) | 1,360 (2.7%) |
| 2015–2016 | 29,326 (57.8%) | 1,213 (2.4%) | 902 (1.8%) |
| 2013–2014 | 19,170 (37.8%) | 387 (0.8%) | 2,626 (5.2%) |
| 2011–2012 | 25,295 (49.8%) | 319 (0.6%) | 1,866 (3.7%) |
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
- 69,170 (± 1,059)
- Median Age
- 33.8
- Median Household Income
- $108,095 (± $7,138)
- High School Graduate or Higher (age 25+)
- 97.7%
- Bachelor's Degree or Higher (age 25+)
- 51.4%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 18,600 | 26.9% |
| 18 to 64 | 42,163 | 61.0% |
| 65 and over | 8,407 | 12.2% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 3,256 | 4.7% |
| White, not Hispanic | 59,399 | 85.9% |
| Black, not Hispanic | 1,588 | 2.3% |
| Asian, not Hispanic | 2,553 | 3.7% |
| American Indian / Alaska Native, not Hispanic | 5 | 0.0% |
| Native Hawaiian / Pacific Islander, not Hispanic | 0 | 0.0% |
| Some other race, not Hispanic | 110 | 0.2% |
| Two or more races, not Hispanic | 2,259 | 3.3% |
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
- 67,432
- Citizen Voting Age Population (CVAP)
- 48,845
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 64,935 | 96.3% |
| Hispanic | 2,499 | 3.7% |
| White | 60,241 | 89.3% |
| Black | 1,562 | 2.3% |
| Asian | 1,955 | 2.9% |
| American Indian / Alaska Native | 4 | 0.0% |
| Native Hawaiian / Pacific Islander | 0 | 0.0% |
| Two or More Races | 48 | 0.1% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 47,656 | 97.6% |
| Hispanic | 1,185 | 2.4% |
| White | 45,204 | 92.5% |
| Black | 1,139 | 2.3% |
| Asian | 1,241 | 2.5% |
| American Indian / Alaska Native | 75 | 0.2% |
| Native Hawaiian / Pacific Islander | 2 | 0.0% |
| Two or More Races | 0 | 0.0% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
