Overview
- District ID
- ia-hd-042
- State
- Iowa
- Chamber
- Lower chamber
- District Code
- 042
- Land Area
- 15.8 sq mi
- Water Area
- 0.03 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 | 15.83 sq mi | 100.0% | 2.8% |
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 | 31,911 | 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
- 23,445
- Active Voters
- 20,352 (86.8%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 6,724 | 28.7% |
| Republican | 8,074 | 34.4% |
| Unaffiliated | 8,428 | 35.9% |
| Other parties | 219 | 0.9% |
| No party recorded | 0 | 0.0% |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 6,580 (28.1%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 18,865 (80.5%) | 691 (2.9%) | 848 (3.6%) |
| 2021–2022 | 14,195 (60.5%) | 1,933 (8.2%) | 1,828 (7.8%) |
| 2019–2020 | 17,240 (73.5%) | 2,873 (12.3%) | 1,805 (7.7%) |
| 2017–2018 | 12,804 (54.6%) | 1,971 (8.4%) | 654 (2.8%) |
| 2015–2016 | 13,758 (58.7%) | 648 (2.8%) | 506 (2.2%) |
| 2013–2014 | 9,214 (39.3%) | 215 (0.9%) | 1,329 (5.7%) |
| 2011–2012 | 11,948 (51.0%) | 168 (0.7%) | 892 (3.8%) |
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
- 31,907 (± 1,790)
- Median Age
- 36.2
- Median Household Income
- $102,656 (± $5,843)
- High School Graduate or Higher (age 25+)
- 96.9%
- Bachelor's Degree or Higher (age 25+)
- 43.8%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 8,378 | 26.3% |
| 18 to 64 | 18,983 | 59.5% |
| 65 and over | 4,546 | 14.2% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 1,726 | 5.4% |
| White, not Hispanic | 27,061 | 84.8% |
| Black, not Hispanic | 980 | 3.1% |
| Asian, not Hispanic | 758 | 2.4% |
| American Indian / Alaska Native, not Hispanic | 2 | 0.0% |
| Native Hawaiian / Pacific Islander, not Hispanic | 0 | 0.0% |
| Some other race, not Hispanic | 0 | 0.0% |
| Two or more races, not Hispanic | 1,380 | 4.3% |
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
- 31,413
- Citizen Voting Age Population (CVAP)
- 23,045
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 29,885 | 95.1% |
| Hispanic | 1,535 | 4.9% |
| White | 27,388 | 87.2% |
| Black | 954 | 3.0% |
| Asian | 810 | 2.6% |
| American Indian / Alaska Native | 2 | 0.0% |
| Native Hawaiian / Pacific Islander | 0 | 0.0% |
| Two or More Races | 1 | 0.0% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 22,443 | 97.4% |
| Hispanic | 601 | 2.6% |
| White | 21,063 | 91.4% |
| Black | 732 | 3.2% |
| Asian | 600 | 2.6% |
| American Indian / Alaska Native | 48 | 0.2% |
| Native Hawaiian / Pacific Islander | 1 | 0.0% |
| Two or More Races | 4 | 0.0% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
