Overview
- District ID
- il-hd-118
- State
- Illinois
- Chamber
- Lower chamber
- District Code
- 118
- Land Area
- 1,244.4 sq mi
- Water Area
- 56.6 sq mi
Boundary
Boundary as GeoJSON
Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.
Counties
Showing all 5 counties
Places
Showing top 25 of 38 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 12 | 108,520 | 100.0% | 14.4% | 100.0% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 80,703
- Active Voters
- 72,349 (89.6%)
Party Registration
This state's voter file does not record party registration.
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 9,088 (11.3%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 48,389 (60.0%) | 3,872 (4.8%) | 9,330 (11.6%) |
| 2021–2022 | 36,363 (45.1%) | 4,798 (5.9%) | 9,090 (11.3%) |
| 2019–2020 | 44,754 (55.5%) | 9,179 (11.4%) | 7,464 (9.2%) |
| 2017–2018 | 36,687 (45.5%) | 8,898 (11.0%) | 5,884 (7.3%) |
| 2015–2016 | 38,517 (47.7%) | 10,973 (13.6%) | 11,254 (13.9%) |
| 2013–2014 | 26,469 (32.8%) | 3,611 (4.5%) | 5,386 (6.7%) |
| 2011–2012 | 31,065 (38.5%) | 4,805 (6.0%) | 6,245 (7.7%) |
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
- 106,927 (± 1,250)
- Median Age
- 38.0
- Median Household Income
- $53,295 (± $2,157)
- High School Graduate or Higher (age 25+)
- 92.1%
- Bachelor's Degree or Higher (age 25+)
- 30.1%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 21,777 | 20.4% |
| 18 to 64 | 64,974 | 60.8% |
| 65 and over | 20,176 | 18.9% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 4,617 | 4.3% |
| White, not Hispanic | 83,373 | 78.0% |
| Black, not Hispanic | 11,643 | 10.9% |
| Asian, not Hispanic | 2,833 | 2.6% |
| American Indian / Alaska Native, not Hispanic | 60 | 0.1% |
| Native Hawaiian / Pacific Islander, not Hispanic | 26 | 0.0% |
| Some other race, not Hispanic | 348 | 0.3% |
| Two or more races, not Hispanic | 4,027 | 3.8% |
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
- 104,202
- Citizen Voting Age Population (CVAP)
- 82,616
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 100,304 | 96.3% |
| Hispanic | 3,901 | 3.7% |
| White | 83,615 | 80.2% |
| Black | 11,561 | 11.1% |
| Asian | 1,594 | 1.5% |
| American Indian / Alaska Native | 61 | 0.1% |
| Native Hawaiian / Pacific Islander | 27 | 0.0% |
| Two or More Races | 551 | 0.5% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 79,972 | 96.8% |
| Hispanic | 2,643 | 3.2% |
| White | 67,822 | 82.1% |
| Black | 9,692 | 11.7% |
| Asian | 1,532 | 1.9% |
| American Indian / Alaska Native | 638 | 0.8% |
| Native Hawaiian / Pacific Islander | 15 | 0.0% |
| Two or More Races | 270 | 0.3% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
