Overview
- District ID
- ia-hd-016
- State
- Iowa
- Chamber
- Lower chamber
- District Code
- 016
- Land Area
- 1,515.5 sq mi
- Water Area
- 9.79 sq mi
Boundary
Boundary as GeoJSON
Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.
Counties
Showing all 3 counties
Places
Showing top 25 of 28 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 | 31,826 | 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
- 23,595
- Active Voters
- 19,894 (84.3%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 3,817 | 16.2% |
| Republican | 13,263 | 56.2% |
| Unaffiliated | 6,219 | 26.4% |
| Other parties | 296 | 1.3% |
| No party recorded | 0 | 0.0% |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 4,539 (19.2%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 18,225 (77.2%) | 305 (1.3%) | 2,645 (11.2%) |
| 2021–2022 | 12,656 (53.6%) | 624 (2.6%) | 3,232 (13.7%) |
| 2019–2020 | 16,702 (70.8%) | 1,402 (5.9%) | 4,871 (20.6%) |
| 2017–2018 | 12,057 (51.1%) | 727 (3.1%) | 2,095 (8.9%) |
| 2015–2016 | 13,683 (58.0%) | 258 (1.1%) | 1,712 (7.3%) |
| 2013–2014 | 8,761 (37.1%) | 160 (0.7%) | 1,792 (7.6%) |
| 2011–2012 | 11,606 (49.2%) | 210 (0.9%) | 2,349 (10.0%) |
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
- 32,426 (± 611)
- Median Age
- 43.1
- Median Household Income
- $84,529 (± $2,450)
- High School Graduate or Higher (age 25+)
- 95.2%
- Bachelor's Degree or Higher (age 25+)
- 27.2%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 7,618 | 23.5% |
| 18 to 64 | 17,707 | 54.6% |
| 65 and over | 7,101 | 21.9% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 1,193 | 3.7% |
| White, not Hispanic | 29,965 | 92.4% |
| Black, not Hispanic | 110 | 0.3% |
| Asian, not Hispanic | 118 | 0.4% |
| American Indian / Alaska Native, not Hispanic | 21 | 0.1% |
| Native Hawaiian / Pacific Islander, not Hispanic | 77 | 0.2% |
| Some other race, not Hispanic | 46 | 0.1% |
| Two or more races, not Hispanic | 896 | 2.8% |
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
- 32,185
- Citizen Voting Age Population (CVAP)
- 24,592
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 31,135 | 96.7% |
| Hispanic | 1,053 | 3.3% |
| White | 30,194 | 93.8% |
| Black | 102 | 0.3% |
| Asian | 116 | 0.4% |
| American Indian / Alaska Native | 20 | 0.1% |
| Native Hawaiian / Pacific Islander | 17 | 0.1% |
| Two or More Races | 39 | 0.1% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 23,976 | 97.5% |
| Hispanic | 615 | 2.5% |
| White | 23,303 | 94.8% |
| Black | 233 | 0.9% |
| Asian | 181 | 0.7% |
| American Indian / Alaska Native | 205 | 0.8% |
| Native Hawaiian / Pacific Islander | 17 | 0.1% |
| Two or More Races | 40 | 0.2% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
