Overview
- District ID
- il-hd-021
- State
- Illinois
- Chamber
- Lower chamber
- District Code
- 021
- Land Area
- 18.2 sq mi
- Water Area
- 0.33 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 | 18.15 sq mi | 100.0% | 1.9% |
Showing all 1 county
Places
Showing all 15 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 4 | 89,382 | 82.2% | 11.9% | 63.3% |
| IL District 6 | 19,382 | 17.8% | 2.6% | 35.5% |
| IL District 7 | 17 | <0.1% | <0.1% | 1.2% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 64,347
- Active Voters
- 62,238 (96.7%)
Party Registration
This state's voter file does not record party registration.
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 6,122 (9.5%) | <10 (—) | 0 (0.0%) |
| 2023–2024 | 36,989 (57.5%) | 7,446 (11.6%) | 2,007 (3.1%) |
| 2021–2022 | 23,321 (36.2%) | 9,403 (14.6%) | 2,480 (3.9%) |
| 2019–2020 | 36,975 (57.5%) | 14,165 (22.0%) | 1,401 (2.2%) |
| 2017–2018 | 26,402 (41.0%) | 12,756 (19.8%) | 2,021 (3.1%) |
| 2015–2016 | 30,522 (47.4%) | 15,898 (24.7%) | 4,500 (7.0%) |
| 2013–2014 | 16,838 (26.2%) | 3,594 (5.6%) | 2,282 (3.5%) |
| 2011–2012 | 21,559 (33.5%) | 4,688 (7.3%) | 2,363 (3.7%) |
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
- 108,058 (± 2,890)
- Median Age
- 39.1
- Median Household Income
- $79,675 (± $3,911)
- High School Graduate or Higher (age 25+)
- 81.0%
- Bachelor's Degree or Higher (age 25+)
- 26.2%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 24,765 | 22.9% |
| 18 to 64 | 66,916 | 61.9% |
| 65 and over | 16,377 | 15.2% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 60,887 | 56.3% |
| White, not Hispanic | 36,601 | 33.9% |
| Black, not Hispanic | 5,793 | 5.4% |
| Asian, not Hispanic | 3,255 | 3.0% |
| American Indian / Alaska Native, not Hispanic | 47 | 0.0% |
| Native Hawaiian / Pacific Islander, not Hispanic | 0 | 0.0% |
| Some other race, not Hispanic | 75 | 0.1% |
| Two or more races, not Hispanic | 1,400 | 1.3% |
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
- 92,754
- Citizen Voting Age Population (CVAP)
- 68,551
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 45,045 | 48.6% |
| Hispanic | 47,710 | 51.4% |
| White | 35,885 | 38.7% |
| Black | 5,618 | 6.1% |
| Asian | 2,503 | 2.7% |
| American Indian / Alaska Native | 49 | 0.1% |
| Native Hawaiian / Pacific Islander | 1 | 0.0% |
| Two or More Races | 25 | 0.0% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 37,446 | 54.6% |
| Hispanic | 31,107 | 45.4% |
| White | 30,946 | 45.1% |
| Black | 4,127 | 6.0% |
| Asian | 2,223 | 3.2% |
| American Indian / Alaska Native | 139 | 0.2% |
| Native Hawaiian / Pacific Islander | 0 | 0.0% |
| Two or More Races | 25 | 0.0% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
