Overview
- District ID
- il-hd-085
- State
- Illinois
- Chamber
- Lower chamber
- District Code
- 085
- Land Area
- 56.7 sq mi
- Water Area
- 1.4 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 11 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 | 69,266 | 63.9% | 9.2% | 41.2% |
| IL District 14 | 31,670 | 29.2% | 4.2% | 48.0% |
| IL District 1 | 7,448 | 6.9% | 1.0% | 10.8% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 68,497
- Active Voters
- 65,011 (94.9%)
Party Registration
This state's voter file does not record party registration.
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 10,504 (15.3%) | 259 (0.4%) | <10 (—) |
| 2023–2024 | 44,918 (65.6%) | 6,357 (9.3%) | 4,429 (6.5%) |
| 2021–2022 | 31,315 (45.7%) | 6,968 (10.2%) | 5,073 (7.4%) |
| 2019–2020 | 43,337 (63.3%) | 12,385 (18.1%) | 3,433 (5.0%) |
| 2017–2018 | 31,005 (45.3%) | 8,029 (11.7%) | 4,061 (5.9%) |
| 2015–2016 | 33,036 (48.2%) | 11,806 (17.2%) | 7,487 (10.9%) |
| 2013–2014 | 19,967 (29.2%) | 1,715 (2.5%) | 3,904 (5.7%) |
| 2011–2012 | 24,835 (36.3%) | 2,239 (3.3%) | 4,218 (6.2%) |
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
- 111,089 (± 1,734)
- Median Age
- 38.2
- Median Household Income
- $91,916 (± $3,614)
- High School Graduate or Higher (age 25+)
- 87.5%
- Bachelor's Degree or Higher (age 25+)
- 31.3%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 24,181 | 21.8% |
| 18 to 64 | 69,818 | 62.8% |
| 65 and over | 17,090 | 15.4% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 33,579 | 30.2% |
| White, not Hispanic | 51,839 | 46.7% |
| Black, not Hispanic | 14,335 | 12.9% |
| Asian, not Hispanic | 7,395 | 6.7% |
| American Indian / Alaska Native, not Hispanic | 10 | 0.0% |
| Native Hawaiian / Pacific Islander, not Hispanic | 12 | 0.0% |
| Some other race, not Hispanic | 277 | 0.2% |
| Two or more races, not Hispanic | 3,642 | 3.3% |
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
- 101,401
- Citizen Voting Age Population (CVAP)
- 77,832
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 74,186 | 73.2% |
| Hispanic | 27,217 | 26.8% |
| White | 51,367 | 50.7% |
| Black | 13,872 | 13.7% |
| Asian | 6,204 | 6.1% |
| American Indian / Alaska Native | 10 | 0.0% |
| Native Hawaiian / Pacific Islander | 30 | 0.0% |
| Two or More Races | 269 | 0.3% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 61,187 | 78.6% |
| Hispanic | 16,643 | 21.4% |
| White | 44,247 | 56.8% |
| Black | 11,054 | 14.2% |
| Asian | 5,400 | 6.9% |
| American Indian / Alaska Native | 373 | 0.5% |
| Native Hawaiian / Pacific Islander | 29 | 0.0% |
| Two or More Races | 149 | 0.2% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
