Overview
- District ID
- il-hd-110
- State
- Illinois
- Chamber
- Lower chamber
- District Code
- 110
- Land Area
- 2,668.1 sq mi
- Water Area
- 45.5 sq mi
Boundary
Boundary as GeoJSON
Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.
Counties
Showing all 8 counties
Places
Showing top 25 of 46 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 | 83,592 | 77.0% | 11.1% | 65.8% |
| IL District 15 | 24,972 | 23.0% | 3.3% | 34.2% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 73,999
- Active Voters
- 71,804 (97.0%)
Party Registration
This state's voter file does not record party registration.
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 16,061 (21.7%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 50,594 (68.4%) | 2,070 (2.8%) | 14,265 (19.3%) |
| 2021–2022 | 40,587 (54.8%) | 2,026 (2.7%) | 17,402 (23.5%) |
| 2019–2020 | 46,524 (62.9%) | 5,174 (7.0%) | 14,252 (19.3%) |
| 2017–2018 | 35,415 (47.9%) | 3,904 (5.3%) | 10,887 (14.7%) |
| 2015–2016 | 39,932 (54.0%) | 6,164 (8.3%) | 14,949 (20.2%) |
| 2013–2014 | 27,875 (37.7%) | 1,976 (2.7%) | 7,234 (9.8%) |
| 2011–2012 | 32,011 (43.3%) | 1,886 (2.5%) | 6,454 (8.7%) |
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
- 107,508 (± 590)
- Median Age
- 41.8
- Median Household Income
- $62,541 (± $1,663)
- High School Graduate or Higher (age 25+)
- 89.8%
- Bachelor's Degree or Higher (age 25+)
- 16.8%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 23,658 | 22.0% |
| 18 to 64 | 62,210 | 57.9% |
| 65 and over | 21,640 | 20.1% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 2,724 | 2.5% |
| White, not Hispanic | 96,604 | 89.9% |
| Black, not Hispanic | 2,851 | 2.7% |
| Asian, not Hispanic | 575 | 0.5% |
| American Indian / Alaska Native, not Hispanic | 140 | 0.1% |
| Native Hawaiian / Pacific Islander, not Hispanic | 15 | 0.0% |
| Some other race, not Hispanic | 523 | 0.5% |
| Two or more races, not Hispanic | 4,076 | 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
- 106,773
- Citizen Voting Age Population (CVAP)
- 83,188
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 104,513 | 97.9% |
| Hispanic | 2,266 | 2.1% |
| White | 97,607 | 91.4% |
| Black | 2,863 | 2.7% |
| Asian | 398 | 0.4% |
| American Indian / Alaska Native | 142 | 0.1% |
| Native Hawaiian / Pacific Islander | 14 | 0.0% |
| Two or More Races | 132 | 0.1% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 81,869 | 98.4% |
| Hispanic | 1,322 | 1.6% |
| White | 76,776 | 92.3% |
| Black | 2,747 | 3.3% |
| Asian | 415 | 0.5% |
| American Indian / Alaska Native | 1,814 | 2.2% |
| Native Hawaiian / Pacific Islander | 16 | 0.0% |
| Two or More Races | 110 | 0.1% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
