Overview
- District ID
- il-hd-041
- State
- Illinois
- Chamber
- Lower chamber
- District Code
- 041
- Land Area
- 32 sq mi
- Water Area
- 0.46 sq mi
Boundary
Boundary as GeoJSON
Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.
Counties
Showing all 2 counties
Places
Showing all 4 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 11 | 75,447 | 69.5% | 10.0% | 71.6% |
| IL District 14 | 29,084 | 26.8% | 3.9% | 26.0% |
| IL District 3 | 4,048 | 3.7% | 0.5% | 2.4% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 82,420
- Active Voters
- 74,658 (90.6%)
Party Registration
This state's voter file does not record party registration.
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 18,595 (22.6%) | 1,110 (1.3%) | <10 (—) |
| 2023–2024 | 57,198 (69.4%) | 8,707 (10.6%) | 5,504 (6.7%) |
| 2021–2022 | 42,955 (52.1%) | 8,151 (9.9%) | 7,146 (8.7%) |
| 2019–2020 | 55,156 (66.9%) | 15,430 (18.7%) | 5,366 (6.5%) |
| 2017–2018 | 41,299 (50.1%) | 9,180 (11.1%) | 7,134 (8.7%) |
| 2015–2016 | 42,381 (51.4%) | 11,696 (14.2%) | 12,794 (15.5%) |
| 2013–2014 | 26,723 (32.4%) | 1,210 (1.5%) | 6,936 (8.4%) |
| 2011–2012 | 32,584 (39.5%) | 1,993 (2.4%) | 7,670 (9.3%) |
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
- 111,164 (± 2,575)
- Median Age
- 39.0
- Median Household Income
- $146,533 (± $6,724)
- High School Graduate or Higher (age 25+)
- 96.3%
- Bachelor's Degree or Higher (age 25+)
- 67.8%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 27,697 | 24.9% |
| 18 to 64 | 67,538 | 60.8% |
| 65 and over | 15,929 | 14.3% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 11,914 | 10.7% |
| White, not Hispanic | 69,954 | 62.9% |
| Black, not Hispanic | 5,438 | 4.9% |
| Asian, not Hispanic | 18,840 | 16.9% |
| American Indian / Alaska Native, not Hispanic | 123 | 0.1% |
| Native Hawaiian / Pacific Islander, not Hispanic | 14 | 0.0% |
| Some other race, not Hispanic | 660 | 0.6% |
| Two or more races, not Hispanic | 4,221 | 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
- 102,131
- Citizen Voting Age Population (CVAP)
- 75,607
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 92,127 | 90.2% |
| Hispanic | 10,005 | 9.8% |
| White | 69,046 | 67.6% |
| Black | 5,562 | 5.4% |
| Asian | 14,179 | 13.9% |
| American Indian / Alaska Native | 122 | 0.1% |
| Native Hawaiian / Pacific Islander | 14 | 0.0% |
| Two or More Races | 334 | 0.3% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 69,569 | 92.0% |
| Hispanic | 6,033 | 8.0% |
| White | 53,892 | 71.3% |
| Black | 4,793 | 6.3% |
| Asian | 10,457 | 13.8% |
| American Indian / Alaska Native | 215 | 0.3% |
| Native Hawaiian / Pacific Islander | 13 | 0.0% |
| Two or More Races | 216 | 0.3% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
