Overview
- District ID
- ia-hd-037
- State
- Iowa
- Chamber
- Lower chamber
- District Code
- 037
- Land Area
- 779.9 sq mi
- Water Area
- 10.6 sq mi
Boundary
Boundary as GeoJSON
Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.
Counties
Showing all 3 counties
Places
Showing all 12 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 1 | 31,835 | 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
- 23,545
- Active Voters
- 20,693 (87.9%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 3,710 | 15.8% |
| Republican | 12,092 | 51.4% |
| Unaffiliated | 7,583 | 32.2% |
| Other parties | 160 | 0.7% |
| No party recorded | 0 | 0.0% |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 4,691 (19.9%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 19,162 (81.4%) | 250 (1.1%) | 1,917 (8.1%) |
| 2021–2022 | 14,620 (62.1%) | 955 (4.1%) | 3,790 (16.1%) |
| 2019–2020 | 17,701 (75.2%) | 1,607 (6.8%) | 3,434 (14.6%) |
| 2017–2018 | 13,385 (56.8%) | 920 (3.9%) | 2,071 (8.8%) |
| 2015–2016 | 14,766 (62.7%) | 424 (1.8%) | 1,020 (4.3%) |
| 2013–2014 | 10,822 (46.0%) | 135 (0.6%) | 1,732 (7.4%) |
| 2011–2012 | 13,221 (56.2%) | 243 (1.0%) | 1,873 (8.0%) |
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
- 31,774 (± 806)
- Median Age
- 38.9
- Median Household Income
- $82,375 (± $3,630)
- High School Graduate or Higher (age 25+)
- 95.8%
- Bachelor's Degree or Higher (age 25+)
- 30.9%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 7,758 | 24.4% |
| 18 to 64 | 18,055 | 56.8% |
| 65 and over | 5,961 | 18.8% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 629 | 2.0% |
| White, not Hispanic | 29,905 | 94.1% |
| Black, not Hispanic | 120 | 0.4% |
| Asian, not Hispanic | 379 | 1.2% |
| American Indian / Alaska Native, not Hispanic | 7 | 0.0% |
| Native Hawaiian / Pacific Islander, not Hispanic | 2 | 0.0% |
| Some other race, not Hispanic | 59 | 0.2% |
| Two or more races, not Hispanic | 673 | 2.1% |
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
- 31,504
- Citizen Voting Age Population (CVAP)
- 23,802
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 30,953 | 98.3% |
| Hispanic | 550 | 1.7% |
| White | 29,978 | 95.2% |
| Black | 125 | 0.4% |
| Asian | 301 | 1.0% |
| American Indian / Alaska Native | 8 | 0.0% |
| Native Hawaiian / Pacific Islander | 5 | 0.0% |
| Two or More Races | 21 | 0.1% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 23,441 | 98.5% |
| Hispanic | 361 | 1.5% |
| White | 22,848 | 96.0% |
| Black | 228 | 1.0% |
| Asian | 253 | 1.1% |
| American Indian / Alaska Native | 101 | 0.4% |
| Native Hawaiian / Pacific Islander | 0 | 0.0% |
| Two or More Races | 15 | 0.1% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
