Overview
- District ID
- il-hd-040
- State
- Illinois
- Chamber
- Lower chamber
- District Code
- 040
- Land Area
- 5.63 sq mi
- Water Area
- 0.1 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 | 5.63 sq mi | 100.0% | 0.6% |
Showing all 1 county
Places
| Place | Overlap | Share of district land | Share of place land |
|---|
| Chicago city | 5.63 sq mi | 100.0% | 2.5% |
Showing all 1 place
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 3 | 93,518 | 86.1% | 12.4% | 75.5% |
| IL District 5 | 15,142 | 13.9% | 2.0% | 24.5% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 66,904
- Active Voters
- 57,882 (86.5%)
Party Registration
This state's voter file does not record party registration.
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 21 (0.0%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 42,161 (63.0%) | 14,075 (21.0%) | 1,328 (2.0%) |
| 2021–2022 | 26,957 (40.3%) | 11,280 (16.9%) | 944 (1.4%) |
| 2019–2020 | 41,088 (61.4%) | 19,303 (28.9%) | 624 (0.9%) |
| 2017–2018 | 29,259 (43.7%) | 12,624 (18.9%) | 791 (1.2%) |
| 2015–2016 | 30,435 (45.5%) | 17,747 (26.5%) | 2,239 (3.3%) |
| 2013–2014 | 13,380 (20.0%) | 3,510 (5.2%) | 813 (1.2%) |
| 2011–2012 | 18,937 (28.3%) | 2,967 (4.4%) | 931 (1.4%) |
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
- 108,140 (± 3,914)
- Median Age
- 35.0
- Median Household Income
- $94,772 (± $5,488)
- High School Graduate or Higher (age 25+)
- 87.0%
- Bachelor's Degree or Higher (age 25+)
- 52.2%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 21,719 | 20.1% |
| 18 to 64 | 75,693 | 70.0% |
| 65 and over | 10,728 | 9.9% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 45,272 | 41.9% |
| White, not Hispanic | 44,598 | 41.2% |
| Black, not Hispanic | 3,794 | 3.5% |
| Asian, not Hispanic | 9,677 | 8.9% |
| American Indian / Alaska Native, not Hispanic | 168 | 0.2% |
| Native Hawaiian / Pacific Islander, not Hispanic | 85 | 0.1% |
| Some other race, not Hispanic | 512 | 0.5% |
| Two or more races, not Hispanic | 4,034 | 3.7% |
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
- 91,509
- Citizen Voting Age Population (CVAP)
- 70,892
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 57,241 | 62.6% |
| Hispanic | 34,271 | 37.5% |
| White | 42,605 | 46.6% |
| Black | 3,819 | 4.2% |
| Asian | 7,453 | 8.1% |
| American Indian / Alaska Native | 167 | 0.2% |
| Native Hawaiian / Pacific Islander | 84 | 0.1% |
| Two or More Races | 285 | 0.3% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 47,556 | 67.1% |
| Hispanic | 23,333 | 32.9% |
| White | 35,860 | 50.6% |
| Black | 3,960 | 5.6% |
| Asian | 7,116 | 10.0% |
| American Indian / Alaska Native | 445 | 0.6% |
| Native Hawaiian / Pacific Islander | 86 | 0.1% |
| Two or More Races | 146 | 0.2% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
