Overview
- District ID
- ia-sd-033
- State
- Iowa
- Chamber
- Upper chamber (state senate)
- District Code
- 033
- Land Area
- 1,570.2 sq mi
- Water Area
- 17.4 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 36 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 1 | 31,980 | 50.2% | 4.0% | 70.3% |
| IA District 2 | 31,763 | 49.8% | 4.0% | 29.7% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 45,483
- Active Voters
- 40,240 (88.5%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 11,262 | 24.8% |
| Republican | 17,930 | 39.4% |
| Unaffiliated | 16,023 | 35.2% |
| Other parties | 268 | 0.6% |
| No party recorded | 0 | 0.0% |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 10,120 (22.3%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 37,165 (81.7%) | 625 (1.4%) | 2,754 (6.1%) |
| 2021–2022 | 27,587 (60.7%) | 2,803 (6.2%) | 4,184 (9.2%) |
| 2019–2020 | 34,839 (76.6%) | 5,986 (13.2%) | 5,769 (12.7%) |
| 2017–2018 | 26,284 (57.8%) | 3,236 (7.1%) | 1,638 (3.6%) |
| 2015–2016 | 29,222 (64.2%) | 2,489 (5.5%) | 950 (2.1%) |
| 2013–2014 | 20,905 (46.0%) | 1,721 (3.8%) | 2,115 (4.7%) |
| 2011–2012 | 26,464 (58.2%) | 431 (0.9%) | 1,105 (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
- 64,725 (± 856)
- Median Age
- 41.2
- Median Household Income
- $89,087 (± $2,922)
- High School Graduate or Higher (age 25+)
- 94.5%
- Bachelor's Degree or Higher (age 25+)
- 26.7%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 15,819 | 24.4% |
| 18 to 64 | 36,900 | 57.0% |
| 65 and over | 12,006 | 18.5% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 2,035 | 3.1% |
| White, not Hispanic | 60,173 | 93.0% |
| Black, not Hispanic | 884 | 1.4% |
| Asian, not Hispanic | 452 | 0.7% |
| American Indian / Alaska Native, not Hispanic | 31 | 0.0% |
| Native Hawaiian / Pacific Islander, not Hispanic | 37 | 0.1% |
| Some other race, not Hispanic | 102 | 0.2% |
| Two or more races, not Hispanic | 1,011 | 1.6% |
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
- 64,003
- Citizen Voting Age Population (CVAP)
- 48,216
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 62,452 | 97.6% |
| Hispanic | 1,551 | 2.4% |
| White | 60,661 | 94.8% |
| Black | 880 | 1.4% |
| Asian | 298 | 0.5% |
| American Indian / Alaska Native | 30 | 0.0% |
| Native Hawaiian / Pacific Islander | 36 | 0.1% |
| Two or More Races | 10 | 0.0% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 47,428 | 98.4% |
| Hispanic | 789 | 1.6% |
| White | 46,179 | 95.8% |
| Black | 817 | 1.7% |
| Asian | 203 | 0.4% |
| American Indian / Alaska Native | 184 | 0.4% |
| Native Hawaiian / Pacific Islander | 35 | 0.1% |
| Two or More Races | 10 | 0.0% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
