Overview
- District ID
- ia-sd-028
- State
- Iowa
- Chamber
- Upper chamber (state senate)
- District Code
- 028
- Land Area
- 2,816.6 sq mi
- Water Area
- 6.49 sq mi
Boundary
Boundary as GeoJSON
Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.
Counties
Showing all 6 counties
Places
Showing top 25 of 55 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 | 64,060 | 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
- 40,997
- Active Voters
- 35,362 (86.3%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 7,380 | 18.0% |
| Republican | 19,745 | 48.2% |
| Unaffiliated | 13,582 | 33.1% |
| Other parties | 290 | 0.7% |
| No party recorded | 0 | 0.0% |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 8,777 (21.4%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 32,513 (79.3%) | 473 (1.2%) | 4,094 (10.0%) |
| 2021–2022 | 24,199 (59.0%) | 1,712 (4.2%) | 5,284 (12.9%) |
| 2019–2020 | 31,013 (75.6%) | 3,230 (7.9%) | 6,397 (15.6%) |
| 2017–2018 | 23,527 (57.4%) | 1,879 (4.6%) | 3,179 (7.8%) |
| 2015–2016 | 26,451 (64.5%) | 795 (1.9%) | 3,190 (7.8%) |
| 2013–2014 | 19,272 (47.0%) | 468 (1.1%) | 3,844 (9.4%) |
| 2011–2012 | 23,681 (57.8%) | 330 (0.8%) | 2,801 (6.8%) |
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
- 63,397 (± 372)
- Median Age
- 41.9
- Median Household Income
- $70,600 (± $2,837)
- High School Graduate or Higher (age 25+)
- 92.8%
- Bachelor's Degree or Higher (age 25+)
- 23.4%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 15,188 | 24.0% |
| 18 to 64 | 34,384 | 54.2% |
| 65 and over | 13,825 | 21.8% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 7,179 | 11.3% |
| White, not Hispanic | 53,504 | 84.4% |
| Black, not Hispanic | 354 | 0.6% |
| Asian, not Hispanic | 630 | 1.0% |
| American Indian / Alaska Native, not Hispanic | 64 | 0.1% |
| Native Hawaiian / Pacific Islander, not Hispanic | 91 | 0.1% |
| Some other race, not Hispanic | 348 | 0.5% |
| Two or more races, not Hispanic | 1,227 | 1.9% |
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
- 60,651
- Citizen Voting Age Population (CVAP)
- 45,781
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 55,671 | 91.8% |
| Hispanic | 4,987 | 8.2% |
| White | 54,123 | 89.2% |
| Black | 361 | 0.6% |
| Asian | 231 | 0.4% |
| American Indian / Alaska Native | 63 | 0.1% |
| Native Hawaiian / Pacific Islander | 94 | 0.2% |
| Two or More Races | 57 | 0.1% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 43,773 | 95.6% |
| Hispanic | 2,004 | 4.4% |
| White | 42,759 | 93.4% |
| Black | 380 | 0.8% |
| Asian | 265 | 0.6% |
| American Indian / Alaska Native | 277 | 0.6% |
| Native Hawaiian / Pacific Islander | 41 | 0.1% |
| Two or More Races | 58 | 0.1% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
