Overview
- District ID
- il-hd-107
- State
- Illinois
- Chamber
- Lower chamber
- District Code
- 107
- Land Area
- 2,032.4 sq mi
- Water Area
- 22.5 sq mi
Boundary
Boundary as GeoJSON
Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.
Counties
Showing all 7 counties
Places
Showing top 25 of 42 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 15 | 76,483 | 70.5% | 10.1% | 83.8% |
| IL District 12 | 32,065 | 29.5% | 4.3% | 16.2% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 75,378
- Active Voters
- 73,104 (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 | 12,405 (16.5%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 54,945 (72.9%) | 2,434 (3.2%) | 14,573 (19.3%) |
| 2021–2022 | 44,406 (58.9%) | 2,787 (3.7%) | 18,727 (24.8%) |
| 2019–2020 | 50,592 (67.1%) | 5,379 (7.1%) | 12,994 (17.2%) |
| 2017–2018 | 39,826 (52.8%) | 4,688 (6.2%) | 10,970 (14.6%) |
| 2015–2016 | 42,744 (56.7%) | 6,325 (8.4%) | 17,756 (23.6%) |
| 2013–2014 | 30,348 (40.3%) | 4,317 (5.7%) | 10,460 (13.9%) |
| 2011–2012 | 34,766 (46.1%) | 3,279 (4.4%) | 8,456 (11.2%) |
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
- 107,054 (± 785)
- Median Age
- 42.4
- Median Household Income
- $73,784 (± $1,930)
- High School Graduate or Higher (age 25+)
- 92.3%
- Bachelor's Degree or Higher (age 25+)
- 22.3%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 23,916 | 22.3% |
| 18 to 64 | 60,767 | 56.8% |
| 65 and over | 22,371 | 20.9% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 2,383 | 2.2% |
| White, not Hispanic | 100,485 | 93.9% |
| Black, not Hispanic | 1,096 | 1.0% |
| Asian, not Hispanic | 893 | 0.8% |
| American Indian / Alaska Native, not Hispanic | 71 | 0.1% |
| Native Hawaiian / Pacific Islander, not Hispanic | 8 | 0.0% |
| Some other race, not Hispanic | 178 | 0.2% |
| Two or more races, not Hispanic | 1,940 | 1.8% |
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
- 106,341
- Citizen Voting Age Population (CVAP)
- 82,432
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 104,286 | 98.1% |
| Hispanic | 2,050 | 1.9% |
| White | 100,992 | 95.0% |
| Black | 1,078 | 1.0% |
| Asian | 742 | 0.7% |
| American Indian / Alaska Native | 71 | 0.1% |
| Native Hawaiian / Pacific Islander | 6 | 0.0% |
| Two or More Races | 98 | 0.1% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 81,168 | 98.5% |
| Hispanic | 1,270 | 1.5% |
| White | 78,860 | 95.7% |
| Black | 990 | 1.2% |
| Asian | 579 | 0.7% |
| American Indian / Alaska Native | 680 | 0.8% |
| Native Hawaiian / Pacific Islander | 4 | 0.0% |
| Two or More Races | 61 | 0.1% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
