Overview
- District ID
- il-hd-111
- State
- Illinois
- Chamber
- Lower chamber
- District Code
- 111
- Land Area
- 124.6 sq mi
- Water Area
- 9.74 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 |
|---|
| Madison County | 124.63 sq mi | 100.0% | 17.4% |
Showing all 1 county
Places
Showing all 17 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 13 | 102,148 | 94.0% | 13.6% | 96.0% |
| IL District 15 | 6,494 | 6.0% | 0.9% | 4.0% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 77,359
- Active Voters
- 77,182 (99.8%)
Party Registration
This state's voter file does not record party registration.
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 14,434 (18.7%) | <10 (—) | <10 (—) |
| 2023–2024 | 49,372 (63.8%) | 3,347 (4.3%) | 6,667 (8.6%) |
| 2021–2022 | 35,299 (45.6%) | 4,685 (6.1%) | 7,825 (10.1%) |
| 2019–2020 | 45,646 (59.0%) | 8,954 (11.6%) | 4,383 (5.7%) |
| 2017–2018 | 34,197 (44.2%) | 7,310 (9.4%) | 5,283 (6.8%) |
| 2015–2016 | 38,565 (49.9%) | 11,444 (14.8%) | 9,637 (12.5%) |
| 2013–2014 | 23,508 (30.4%) | 4,019 (5.2%) | 2,914 (3.8%) |
| 2011–2012 | 31,743 (41.0%) | 3,015 (3.9%) | 4,114 (5.3%) |
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
- 108,282 (± 1,462)
- Median Age
- 40.2
- Median Household Income
- $63,456 (± $2,174)
- High School Graduate or Higher (age 25+)
- 92.3%
- Bachelor's Degree or Higher (age 25+)
- 22.8%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 23,554 | 21.8% |
| 18 to 64 | 63,609 | 58.7% |
| 65 and over | 21,119 | 19.5% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 5,344 | 4.9% |
| White, not Hispanic | 86,992 | 80.3% |
| Black, not Hispanic | 7,984 | 7.4% |
| Asian, not Hispanic | 864 | 0.8% |
| American Indian / Alaska Native, not Hispanic | 152 | 0.1% |
| Native Hawaiian / Pacific Islander, not Hispanic | 0 | 0.0% |
| Some other race, not Hispanic | 282 | 0.3% |
| Two or more races, not Hispanic | 6,664 | 6.2% |
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
- 107,047
- Citizen Voting Age Population (CVAP)
- 83,603
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 102,539 | 95.8% |
| Hispanic | 4,511 | 4.2% |
| White | 87,879 | 82.1% |
| Black | 7,914 | 7.4% |
| Asian | 718 | 0.7% |
| American Indian / Alaska Native | 150 | 0.1% |
| Native Hawaiian / Pacific Islander | 1 | 0.0% |
| Two or More Races | 204 | 0.2% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 81,040 | 96.9% |
| Hispanic | 2,563 | 3.1% |
| White | 71,782 | 85.9% |
| Black | 6,203 | 7.4% |
| Asian | 963 | 1.2% |
| American Indian / Alaska Native | 1,984 | 2.4% |
| Native Hawaiian / Pacific Islander | 0 | 0.0% |
| Two or More Races | 142 | 0.2% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
