Overview
- District ID
- il-hd-018
- State
- Illinois
- Chamber
- Lower chamber
- District Code
- 018
- Land Area
- 14.8 sq mi
- Water Area
- 0.12 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 |
|---|
| Cook County | 14.85 sq mi | 100.0% | 1.6% |
Showing all 1 county
Places
Showing all 6 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 9 | 83,987 | 77.5% | 11.1% | 56.2% |
| IL District 10 | 24,352 | 22.5% | 3.2% | 43.8% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 82,322
- Active Voters
- 76,225 (92.6%)
Party Registration
This state's voter file does not record party registration.
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 21,230 (25.8%) | <10 (—) | 0 (0.0%) |
| 2023–2024 | 54,071 (65.7%) | 15,000 (18.2%) | 1,970 (2.4%) |
| 2021–2022 | 41,737 (50.7%) | 14,554 (17.7%) | 2,443 (3.0%) |
| 2019–2020 | 53,545 (65.0%) | 25,694 (31.2%) | 1,071 (1.3%) |
| 2017–2018 | 43,640 (53.0%) | 21,168 (25.7%) | 2,925 (3.6%) |
| 2015–2016 | 43,007 (52.2%) | 22,578 (27.4%) | 7,086 (8.6%) |
| 2013–2014 | 27,984 (34.0%) | 5,822 (7.1%) | 3,983 (4.8%) |
| 2011–2012 | 32,075 (39.0%) | 8,619 (10.5%) | 4,224 (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 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
- 104,871 (± 1,468)
- Median Age
- 39.2
- Median Household Income
- $110,025 (± $6,506)
- High School Graduate or Higher (age 25+)
- 96.7%
- Bachelor's Degree or Higher (age 25+)
- 72.5%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 23,344 | 22.3% |
| 18 to 64 | 63,393 | 60.4% |
| 65 and over | 18,134 | 17.3% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 10,679 | 10.2% |
| White, not Hispanic | 66,757 | 63.7% |
| Black, not Hispanic | 11,616 | 11.1% |
| Asian, not Hispanic | 9,342 | 8.9% |
| American Indian / Alaska Native, not Hispanic | 51 | 0.0% |
| Native Hawaiian / Pacific Islander, not Hispanic | 31 | 0.0% |
| Some other race, not Hispanic | 424 | 0.4% |
| Two or more races, not Hispanic | 5,971 | 5.7% |
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
- 95,965
- Citizen Voting Age Population (CVAP)
- 73,399
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 86,960 | 90.6% |
| Hispanic | 9,002 | 9.4% |
| White | 65,775 | 68.5% |
| Black | 10,638 | 11.1% |
| Asian | 6,157 | 6.4% |
| American Indian / Alaska Native | 55 | 0.1% |
| Native Hawaiian / Pacific Islander | 32 | 0.0% |
| Two or More Races | 724 | 0.8% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 67,221 | 91.6% |
| Hispanic | 6,184 | 8.4% |
| White | 51,810 | 70.6% |
| Black | 9,172 | 12.5% |
| Asian | 5,475 | 7.5% |
| American Indian / Alaska Native | 221 | 0.3% |
| Native Hawaiian / Pacific Islander | 24 | 0.0% |
| Two or More Races | 525 | 0.7% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
