Overview
- District ID
- ia-hd-048
- State
- Iowa
- Chamber
- Lower chamber
- District Code
- 048
- Land Area
- 594.2 sq mi
- Water Area
- 3.17 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 |
|---|
| Boone County | 570.49 sq mi | 96.0% | 100.0% |
| Story County | 23.74 sq mi | 4.0% | 4.1% |
Showing all 2 counties
Places
Showing all 13 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 | 32,034 | 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
- 23,501
- Active Voters
- 20,341 (86.6%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 5,670 | 24.1% |
| Republican | 8,308 | 35.4% |
| Unaffiliated | 9,310 | 39.6% |
| Other parties | 213 | 0.9% |
| No party recorded | 0 | 0.0% |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 5,044 (21.5%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 18,651 (79.4%) | 396 (1.7%) | 1,027 (4.4%) |
| 2021–2022 | 13,508 (57.5%) | 1,450 (6.2%) | 1,663 (7.1%) |
| 2019–2020 | 17,196 (73.2%) | 2,671 (11.4%) | 2,354 (10.0%) |
| 2017–2018 | 12,930 (55.0%) | 1,592 (6.8%) | 936 (4.0%) |
| 2015–2016 | 14,043 (59.8%) | 598 (2.5%) | 740 (3.1%) |
| 2013–2014 | 9,940 (42.3%) | 242 (1.0%) | 1,042 (4.4%) |
| 2011–2012 | 12,697 (54.0%) | 266 (1.1%) | 1,206 (5.1%) |
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
- 32,146 (± 672)
- Median Age
- 40.2
- Median Household Income
- $78,700 (± $5,278)
- High School Graduate or Higher (age 25+)
- 95.7%
- Bachelor's Degree or Higher (age 25+)
- 33.0%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 6,329 | 19.7% |
| 18 to 64 | 19,737 | 61.4% |
| 65 and over | 6,080 | 18.9% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 1,012 | 3.1% |
| White, not Hispanic | 29,641 | 92.2% |
| Black, not Hispanic | 438 | 1.4% |
| Asian, not Hispanic | 136 | 0.4% |
| American Indian / Alaska Native, not Hispanic | 12 | 0.0% |
| Native Hawaiian / Pacific Islander, not Hispanic | 0 | 0.0% |
| Some other race, not Hispanic | 36 | 0.1% |
| Two or more races, not Hispanic | 871 | 2.7% |
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
- 32,006
- Citizen Voting Age Population (CVAP)
- 25,688
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 31,052 | 97.0% |
| Hispanic | 955 | 3.0% |
| White | 29,884 | 93.4% |
| Black | 457 | 1.4% |
| Asian | 116 | 0.4% |
| American Indian / Alaska Native | 13 | 0.0% |
| Native Hawaiian / Pacific Islander | 2 | 0.0% |
| Two or More Races | 1 | 0.0% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 25,014 | 97.4% |
| Hispanic | 670 | 2.6% |
| White | 24,292 | 94.6% |
| Black | 447 | 1.7% |
| Asian | 150 | 0.6% |
| American Indian / Alaska Native | 132 | 0.5% |
| Native Hawaiian / Pacific Islander | 0 | 0.0% |
| Two or More Races | 0 | 0.0% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).