Overview
- District ID
- il-hd-116
- State
- Illinois
- Chamber
- Lower chamber
- District Code
- 116
- Land Area
- 2,520.7 sq mi
- Water Area
- 41.2 sq mi
Boundary
Boundary as GeoJSON
Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.
Counties
Showing all 9 counties
Places
Showing top 25 of 49 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 12 | 108,536 | 100.0% | 14.4% | 100.0% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 75,551
- Active Voters
- 72,709 (96.2%)
Party Registration
This state's voter file does not record party registration.
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 14,630 (19.4%) | <10 (—) | 0 (0.0%) |
| 2023–2024 | 51,278 (67.9%) | 2,541 (3.4%) | 17,183 (22.7%) |
| 2021–2022 | 40,619 (53.8%) | 2,258 (3.0%) | 16,651 (22.0%) |
| 2019–2020 | 47,423 (62.8%) | 5,440 (7.2%) | 15,507 (20.5%) |
| 2017–2018 | 37,553 (49.7%) | 5,128 (6.8%) | 10,935 (14.5%) |
| 2015–2016 | 41,440 (54.9%) | 8,142 (10.8%) | 17,588 (23.3%) |
| 2013–2014 | 30,646 (40.6%) | 4,433 (5.9%) | 10,082 (13.3%) |
| 2011–2012 | 33,842 (44.8%) | 6,704 (8.9%) | 7,709 (10.2%) |
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
- 106,926 (± 465)
- Median Age
- 42.8
- Median Household Income
- $58,478 (± $1,759)
- High School Graduate or Higher (age 25+)
- 91.1%
- Bachelor's Degree or Higher (age 25+)
- 17.7%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 23,377 | 21.9% |
| 18 to 64 | 60,075 | 56.2% |
| 65 and over | 23,474 | 22.0% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 2,446 | 2.3% |
| White, not Hispanic | 96,748 | 90.5% |
| Black, not Hispanic | 2,425 | 2.3% |
| Asian, not Hispanic | 805 | 0.8% |
| American Indian / Alaska Native, not Hispanic | 145 | 0.1% |
| Native Hawaiian / Pacific Islander, not Hispanic | 10 | 0.0% |
| Some other race, not Hispanic | 178 | 0.2% |
| Two or more races, not Hispanic | 4,169 | 3.9% |
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
- 105,974
- Citizen Voting Age Population (CVAP)
- 82,658
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 104,091 | 98.2% |
| Hispanic | 1,883 | 1.8% |
| White | 97,738 | 92.2% |
| Black | 2,429 | 2.3% |
| Asian | 592 | 0.6% |
| American Indian / Alaska Native | 145 | 0.1% |
| Native Hawaiian / Pacific Islander | 11 | 0.0% |
| Two or More Races | 297 | 0.3% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 81,496 | 98.6% |
| Hispanic | 1,165 | 1.4% |
| White | 77,183 | 93.4% |
| Black | 2,240 | 2.7% |
| Asian | 627 | 0.8% |
| American Indian / Alaska Native | 1,307 | 1.6% |
| Native Hawaiian / Pacific Islander | 8 | 0.0% |
| Two or More Races | 145 | 0.2% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
