Overview
- District ID
- ia-hd-018
- State
- Iowa
- Chamber
- Lower chamber
- District Code
- 018
- Land Area
- 1,347.1 sq mi
- Water Area
- 1.98 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 19 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 | 31,759 | 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
- 21,276
- Active Voters
- 17,902 (84.1%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 3,181 | 15.0% |
| Republican | 11,827 | 55.6% |
| Unaffiliated | 6,096 | 28.7% |
| Other parties | 172 | 0.8% |
| No party recorded | 0 | 0.0% |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 5,761 (27.1%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 16,538 (77.7%) | 325 (1.5%) | 2,122 (10.0%) |
| 2021–2022 | 12,032 (56.6%) | 667 (3.1%) | 3,481 (16.4%) |
| 2019–2020 | 15,232 (71.6%) | 1,410 (6.6%) | 3,973 (18.7%) |
| 2017–2018 | 10,918 (51.3%) | 775 (3.6%) | 1,851 (8.7%) |
| 2015–2016 | 12,631 (59.4%) | 351 (1.6%) | 3,140 (14.8%) |
| 2013–2014 | 8,677 (40.8%) | 170 (0.8%) | 2,810 (13.2%) |
| 2011–2012 | 10,776 (50.6%) | 163 (0.8%) | 1,921 (9.0%) |
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
- 31,624 (± 182)
- Median Age
- 44.8
- Median Household Income
- $63,547 (± $2,830)
- High School Graduate or Higher (age 25+)
- 93.5%
- Bachelor's Degree or Higher (age 25+)
- 21.4%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 6,954 | 22.0% |
| 18 to 64 | 17,177 | 54.3% |
| 65 and over | 7,493 | 23.7% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 747 | 2.4% |
| White, not Hispanic | 29,383 | 92.9% |
| Black, not Hispanic | 322 | 1.0% |
| Asian, not Hispanic | 182 | 0.6% |
| American Indian / Alaska Native, not Hispanic | 43 | 0.1% |
| Native Hawaiian / Pacific Islander, not Hispanic | 93 | 0.3% |
| Some other race, not Hispanic | 145 | 0.5% |
| Two or more races, not Hispanic | 709 | 2.2% |
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
- 31,396
- Citizen Voting Age Population (CVAP)
- 24,476
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 30,775 | 98.0% |
| Hispanic | 625 | 2.0% |
| White | 29,565 | 94.2% |
| Black | 321 | 1.0% |
| Asian | 142 | 0.5% |
| American Indian / Alaska Native | 42 | 0.1% |
| Native Hawaiian / Pacific Islander | 88 | 0.3% |
| Two or More Races | 100 | 0.3% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 24,203 | 98.9% |
| Hispanic | 274 | 1.1% |
| White | 23,401 | 95.6% |
| Black | 279 | 1.1% |
| Asian | 120 | 0.5% |
| American Indian / Alaska Native | 267 | 1.1% |
| Native Hawaiian / Pacific Islander | 35 | 0.1% |
| Two or More Races | 97 | 0.4% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
