Overview
- District ID
- ia-hd-001
- State
- Iowa
- Chamber
- Lower chamber
- District Code
- 001
- Land Area
- 14.1 sq mi
- Water Area
- 0.37 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 |
|---|
| Woodbury County | 14.09 sq mi | 100.0% | 1.6% |
Showing all 1 county
Places
| Place | Overlap | Share of district land | Share of place land |
|---|
| Sioux City city | 14.09 sq mi | 100.0% | 23.8% |
Showing all 1 place
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 | 32,022 | 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
- 14,349
- Active Voters
- 10,332 (72.0%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 4,908 | 34.2% |
| Republican | 3,962 | 27.6% |
| Unaffiliated | 5,316 | 37.0% |
| Other parties | 163 | 1.1% |
| No party recorded | 0 | 0.0% |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 1,979 (13.8%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 9,159 (63.8%) | 289 (2.0%) | 450 (3.1%) |
| 2021–2022 | 5,298 (36.9%) | 653 (4.6%) | 797 (5.6%) |
| 2019–2020 | 8,905 (62.1%) | 1,391 (9.7%) | 1,360 (9.5%) |
| 2017–2018 | 6,105 (42.5%) | 858 (6.0%) | 444 (3.1%) |
| 2015–2016 | 6,885 (48.0%) | 404 (2.8%) | 611 (4.3%) |
| 2013–2014 | 4,378 (30.5%) | 305 (2.1%) | 528 (3.7%) |
| 2011–2012 | 6,139 (42.8%) | 182 (1.3%) | 344 (2.4%) |
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
- 32,218 (± 1,401)
- Median Age
- 34.3
- Median Household Income
- $64,585 (± $4,212)
- High School Graduate or Higher (age 25+)
- 78.2%
- Bachelor's Degree or Higher (age 25+)
- 17.2%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 8,462 | 26.3% |
| 18 to 64 | 19,199 | 59.6% |
| 65 and over | 4,557 | 14.1% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 11,583 | 36.0% |
| White, not Hispanic | 15,788 | 49.0% |
| Black, not Hispanic | 1,850 | 5.7% |
| Asian, not Hispanic | 1,120 | 3.5% |
| American Indian / Alaska Native, not Hispanic | 322 | 1.0% |
| Native Hawaiian / Pacific Islander, not Hispanic | 57 | 0.2% |
| Some other race, not Hispanic | 147 | 0.5% |
| Two or more races, not Hispanic | 1,351 | 4.2% |
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
- 28,300
- Citizen Voting Age Population (CVAP)
- 20,265
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 19,797 | 70.0% |
| Hispanic | 8,505 | 30.1% |
| White | 15,922 | 56.3% |
| Black | 1,339 | 4.7% |
| Asian | 933 | 3.3% |
| American Indian / Alaska Native | 321 | 1.1% |
| Native Hawaiian / Pacific Islander | 59 | 0.2% |
| Two or More Races | 463 | 1.6% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 15,884 | 78.4% |
| Hispanic | 4,377 | 21.6% |
| White | 13,341 | 65.8% |
| Black | 1,230 | 6.1% |
| Asian | 872 | 4.3% |
| American Indian / Alaska Native | 307 | 1.5% |
| Native Hawaiian / Pacific Islander | 41 | 0.2% |
| Two or More Races | 100 | 0.5% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
