Overview
- District ID
- il-sd-025
- State
- Illinois
- Chamber
- Upper chamber (state senate)
- District Code
- 025
- Land Area
- 98.6 sq mi
- Water Area
- 2.9 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 14 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 |
|---|
| IL District 11 | 107,902 | 49.6% | 14.3% | 39.0% |
| IL District 3 | 62,191 | 28.6% | 8.3% | 47.0% |
| IL District 8 | 28,202 | 13.0% | 3.7% | 12.0% |
| IL District 14 | 19,118 | 8.8% | 2.5% | 2.1% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 130,622
- Active Voters
- 116,260 (89.0%)
Party Registration
This state's voter file does not record party registration.
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 21,755 (16.7%) | 2,889 (2.2%) | 18 (0.0%) |
| 2023–2024 | 80,208 (61.4%) | 9,433 (7.2%) | 7,058 (5.4%) |
| 2021–2022 | 53,466 (40.9%) | 10,871 (8.3%) | 9,303 (7.1%) |
| 2019–2020 | 75,411 (57.7%) | 19,544 (15.0%) | 6,905 (5.3%) |
| 2017–2018 | 54,224 (41.5%) | 13,379 (10.2%) | 9,657 (7.4%) |
| 2015–2016 | 58,841 (45.0%) | 18,952 (14.5%) | 15,022 (11.5%) |
| 2013–2014 | 34,001 (26.0%) | 2,558 (2.0%) | 8,252 (6.3%) |
| 2011–2012 | 44,715 (34.2%) | 4,125 (3.2%) | 9,041 (6.9%) |
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 12/15/2025. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".
Demographics
- Total Population
- 217,985 (± 2,955)
- Median Age
- 37.1
- Median Household Income
- $98,213 (± $3,083)
- High School Graduate or Higher (age 25+)
- 83.4%
- Bachelor's Degree or Higher (age 25+)
- 36.5%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 53,680 | 24.6% |
| 18 to 64 | 134,927 | 61.9% |
| 65 and over | 29,378 | 13.5% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 88,540 | 40.6% |
| White, not Hispanic | 89,223 | 40.9% |
| Black, not Hispanic | 12,070 | 5.5% |
| Asian, not Hispanic | 21,877 | 10.0% |
| American Indian / Alaska Native, not Hispanic | 186 | 0.1% |
| Native Hawaiian / Pacific Islander, not Hispanic | 168 | 0.1% |
| Some other race, not Hispanic | 960 | 0.4% |
| Two or more races, not Hispanic | 4,961 | 2.3% |
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
- 189,032
- Citizen Voting Age Population (CVAP)
- 137,225
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 121,906 | 64.5% |
| Hispanic | 67,127 | 35.5% |
| White | 89,439 | 47.3% |
| Black | 11,575 | 6.1% |
| Asian | 16,923 | 9.0% |
| American Indian / Alaska Native | 217 | 0.1% |
| Native Hawaiian / Pacific Islander | 42 | 0.0% |
| Two or More Races | 522 | 0.3% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 96,643 | 70.4% |
| Hispanic | 40,579 | 29.6% |
| White | 73,121 | 53.3% |
| Black | 9,685 | 7.1% |
| Asian | 13,027 | 9.5% |
| American Indian / Alaska Native | 658 | 0.5% |
| Native Hawaiian / Pacific Islander | 1 | 0.0% |
| Two or More Races | 277 | 0.2% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
