Overview
- District ID
- il-hd-090
- State
- Illinois
- Chamber
- Lower chamber
- District Code
- 090
- Land Area
- 542.1 sq mi
- Water Area
- 3.6 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 20 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 16 | 79,646 | 73.4% | 10.6% | 76.9% |
| IL District 17 | 28,879 | 26.6% | 3.8% | 23.1% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 76,734
- Active Voters
- 69,787 (90.9%)
Party Registration
This state's voter file does not record party registration.
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 15,938 (20.8%) | 109 (0.1%) | 0 (0.0%) |
| 2023–2024 | 53,415 (69.6%) | 3,965 (5.2%) | 6,653 (8.7%) |
| 2021–2022 | 39,596 (51.6%) | 4,919 (6.4%) | 11,845 (15.4%) |
| 2019–2020 | 48,958 (63.8%) | 8,840 (11.5%) | 6,984 (9.1%) |
| 2017–2018 | 36,074 (47.0%) | 5,694 (7.4%) | 9,774 (12.7%) |
| 2015–2016 | 39,740 (51.8%) | 8,532 (11.1%) | 14,317 (18.7%) |
| 2013–2014 | 25,742 (33.5%) | 2,287 (3.0%) | 8,025 (10.5%) |
| 2011–2012 | 32,395 (42.2%) | 2,585 (3.4%) | 8,478 (11.0%) |
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
- 108,079 (± 1,103)
- Median Age
- 42.5
- Median Household Income
- $76,746 (± $1,992)
- High School Graduate or Higher (age 25+)
- 93.4%
- Bachelor's Degree or Higher (age 25+)
- 25.9%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 24,398 | 22.6% |
| 18 to 64 | 61,056 | 56.5% |
| 65 and over | 22,625 | 20.9% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 8,332 | 7.7% |
| White, not Hispanic | 85,867 | 79.4% |
| Black, not Hispanic | 5,344 | 4.9% |
| Asian, not Hispanic | 1,754 | 1.6% |
| American Indian / Alaska Native, not Hispanic | 96 | 0.1% |
| Native Hawaiian / Pacific Islander, not Hispanic | 11 | 0.0% |
| Some other race, not Hispanic | 313 | 0.3% |
| Two or more races, not Hispanic | 6,362 | 5.9% |
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
- 106,411
- Citizen Voting Age Population (CVAP)
- 82,136
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 98,858 | 92.9% |
| Hispanic | 7,555 | 7.1% |
| White | 86,971 | 81.7% |
| Black | 5,404 | 5.1% |
| Asian | 1,229 | 1.2% |
| American Indian / Alaska Native | 98 | 0.1% |
| Native Hawaiian / Pacific Islander | 14 | 0.0% |
| Two or More Races | 373 | 0.4% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 78,044 | 95.0% |
| Hispanic | 4,086 | 5.0% |
| White | 70,317 | 85.6% |
| Black | 5,051 | 6.1% |
| Asian | 1,126 | 1.4% |
| American Indian / Alaska Native | 1,508 | 1.8% |
| Native Hawaiian / Pacific Islander | 11 | 0.0% |
| Two or More Races | 83 | 0.1% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
