Overview
- District ID
- il-hd-015
- State
- Illinois
- Chamber
- Lower chamber
- District Code
- 015
- Land Area
- 17.2 sq mi
- Water Area
- 0 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 | 17.24 sq mi | 100.0% | 1.8% |
Showing all 1 county
Places
Showing all 5 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 5 | 50,033 | 46.0% | 6.6% | 40.5% |
| IL District 9 | 49,558 | 45.6% | 6.6% | 56.4% |
| IL District 3 | 9,118 | 8.4% | 1.2% | 3.1% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 76,979
- Active Voters
- 72,831 (94.6%)
Party Registration
This state's voter file does not record party registration.
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 4,480 (5.8%) | <10 (—) | 0 (0.0%) |
| 2023–2024 | 49,653 (64.5%) | 13,125 (17.1%) | 3,051 (4.0%) |
| 2021–2022 | 32,545 (42.3%) | 12,295 (16.0%) | 3,820 (5.0%) |
| 2019–2020 | 49,064 (63.7%) | 18,823 (24.5%) | 2,059 (2.7%) |
| 2017–2018 | 34,666 (45.0%) | 14,921 (19.4%) | 3,199 (4.2%) |
| 2015–2016 | 39,269 (51.0%) | 18,920 (24.6%) | 6,368 (8.3%) |
| 2013–2014 | 22,668 (29.4%) | 4,017 (5.2%) | 3,378 (4.4%) |
| 2011–2012 | 28,740 (37.3%) | 5,115 (6.6%) | 3,562 (4.6%) |
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
- 109,780 (± 3,176)
- Median Age
- 42.2
- Median Household Income
- $96,445 (± $4,373)
- High School Graduate or Higher (age 25+)
- 91.3%
- Bachelor's Degree or Higher (age 25+)
- 50.3%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 24,258 | 22.1% |
| 18 to 64 | 62,400 | 56.8% |
| 65 and over | 23,122 | 21.1% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 17,372 | 15.8% |
| White, not Hispanic | 60,913 | 55.5% |
| Black, not Hispanic | 2,732 | 2.5% |
| Asian, not Hispanic | 24,533 | 22.3% |
| American Indian / Alaska Native, not Hispanic | 106 | 0.1% |
| Native Hawaiian / Pacific Islander, not Hispanic | 2 | 0.0% |
| Some other race, not Hispanic | 349 | 0.3% |
| Two or more races, not Hispanic | 3,773 | 3.4% |
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
- 98,940
- Citizen Voting Age Population (CVAP)
- 75,268
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 84,473 | 85.4% |
| Hispanic | 14,471 | 14.6% |
| White | 59,162 | 59.8% |
| Black | 2,623 | 2.7% |
| Asian | 19,899 | 20.1% |
| American Indian / Alaska Native | 102 | 0.1% |
| Native Hawaiian / Pacific Islander | 0 | 0.0% |
| Two or More Races | 263 | 0.3% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 65,900 | 87.6% |
| Hispanic | 9,366 | 12.4% |
| White | 46,913 | 62.3% |
| Black | 2,172 | 2.9% |
| Asian | 16,246 | 21.6% |
| American Indian / Alaska Native | 342 | 0.5% |
| Native Hawaiian / Pacific Islander | 2 | 0.0% |
| Two or More Races | 258 | 0.3% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
