Overview
- District ID
- ia-sd-016
- State
- Iowa
- Chamber
- Upper chamber (state senate)
- District Code
- 016
- Land Area
- 33.6 sq mi
- Water Area
- 1.05 sq mi
Boundary
Boundary as GeoJSON
Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.
Counties
Showing all 2 counties
Places
Showing all 3 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 | 64,223 | 100.0% | 8.1% | 100.0% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 45,290
- Active Voters
- 38,903 (85.9%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 16,792 | 37.1% |
| Republican | 13,425 | 29.6% |
| Unaffiliated | 14,626 | 32.3% |
| Other parties | 447 | 1.0% |
| No party recorded | 0 | 0.0% |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 12,340 (27.2%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 36,447 (80.5%) | 3,042 (6.7%) | 572 (1.3%) |
| 2021–2022 | 28,137 (62.1%) | 5,667 (12.5%) | 3,400 (7.5%) |
| 2019–2020 | 34,870 (77.0%) | 8,064 (17.8%) | 3,361 (7.4%) |
| 2017–2018 | 27,491 (60.7%) | 5,799 (12.8%) | 1,263 (2.8%) |
| 2015–2016 | 28,359 (62.6%) | 2,165 (4.8%) | 799 (1.8%) |
| 2013–2014 | 20,274 (44.8%) | 622 (1.4%) | 3,199 (7.1%) |
| 2011–2012 | 25,068 (55.3%) | 376 (0.8%) | 1,522 (3.4%) |
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
- 65,114 (± 696)
- Median Age
- 37.7
- Median Household Income
- $88,200 (± $3,424)
- High School Graduate or Higher (age 25+)
- 96.1%
- Bachelor's Degree or Higher (age 25+)
- 52.3%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 14,307 | 22.0% |
| 18 to 64 | 39,888 | 61.3% |
| 65 and over | 10,919 | 16.8% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 5,902 | 9.1% |
| White, not Hispanic | 49,746 | 76.4% |
| Black, not Hispanic | 3,122 | 4.8% |
| Asian, not Hispanic | 3,334 | 5.1% |
| American Indian / Alaska Native, not Hispanic | 28 | 0.0% |
| Native Hawaiian / Pacific Islander, not Hispanic | 0 | 0.0% |
| Some other race, not Hispanic | 245 | 0.4% |
| Two or more races, not Hispanic | 2,737 | 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
- 60,653
- Citizen Voting Age Population (CVAP)
- 47,180
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 56,676 | 93.4% |
| Hispanic | 3,981 | 6.6% |
| White | 49,842 | 82.2% |
| Black | 2,655 | 4.4% |
| Asian | 1,869 | 3.1% |
| American Indian / Alaska Native | 28 | 0.0% |
| Native Hawaiian / Pacific Islander | 0 | 0.0% |
| Two or More Races | 60 | 0.1% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 44,829 | 95.0% |
| Hispanic | 2,354 | 5.0% |
| White | 40,179 | 85.2% |
| Black | 2,579 | 5.5% |
| Asian | 1,852 | 3.9% |
| American Indian / Alaska Native | 184 | 0.4% |
| Native Hawaiian / Pacific Islander | 0 | 0.0% |
| Two or More Races | 41 | 0.1% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
