Overview
- District ID
- il-hd-103
- State
- Illinois
- Chamber
- Lower chamber
- District Code
- 103
- Land Area
- 25.7 sq mi
- Water Area
- 0.07 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 |
|---|
| Champaign County | 25.69 sq mi | 100.0% | 2.6% |
Showing all 1 county
Places
Showing all 2 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 | 108,553 | 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
- 55,059
- Active Voters
- 54,876 (99.7%)
Party Registration
This state's voter file does not record party registration.
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 7,876 (14.3%) | 3,346 (6.1%) | 0 (0.0%) |
| 2023–2024 | 38,038 (69.1%) | 5,522 (10.0%) | 1,534 (2.8%) |
| 2021–2022 | 23,034 (41.8%) | 8,049 (14.6%) | 2,646 (4.8%) |
| 2019–2020 | 27,103 (49.2%) | 10,512 (19.1%) | 1,403 (2.5%) |
| 2017–2018 | 20,856 (37.9%) | 8,005 (14.5%) | 2,188 (4.0%) |
| 2015–2016 | 20,466 (37.2%) | 9,466 (17.2%) | 3,661 (6.6%) |
| 2013–2014 | 12,767 (23.2%) | 4,015 (7.3%) | 2,224 (4.0%) |
| 2011–2012 | 15,539 (28.2%) | 2,918 (5.3%) | 2,298 (4.2%) |
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
- 109,095 (± 1,486)
- Median Age
- 24.7
- Median Household Income
- $43,260 (± $2,276)
- High School Graduate or Higher (age 25+)
- 93.8%
- Bachelor's Degree or Higher (age 25+)
- 49.2%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 14,830 | 13.6% |
| 18 to 64 | 83,976 | 77.0% |
| 65 and over | 10,289 | 9.4% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 10,214 | 9.4% |
| White, not Hispanic | 56,906 | 52.2% |
| Black, not Hispanic | 21,684 | 19.9% |
| Asian, not Hispanic | 15,831 | 14.5% |
| American Indian / Alaska Native, not Hispanic | 92 | 0.1% |
| Native Hawaiian / Pacific Islander, not Hispanic | 41 | 0.0% |
| Some other race, not Hispanic | 256 | 0.2% |
| Two or more races, not Hispanic | 4,071 | 3.7% |
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
- 94,541
- Citizen Voting Age Population (CVAP)
- 81,055
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 86,791 | 91.8% |
| Hispanic | 7,748 | 8.2% |
| White | 55,831 | 59.1% |
| Black | 20,078 | 21.2% |
| Asian | 7,701 | 8.1% |
| American Indian / Alaska Native | 89 | 0.1% |
| Native Hawaiian / Pacific Islander | 0 | 0.0% |
| Two or More Races | 301 | 0.3% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 75,101 | 92.7% |
| Hispanic | 5,957 | 7.3% |
| White | 51,438 | 63.5% |
| Black | 15,675 | 19.3% |
| Asian | 7,576 | 9.3% |
| American Indian / Alaska Native | 346 | 0.4% |
| Native Hawaiian / Pacific Islander | 1 | 0.0% |
| Two or More Races | 143 | 0.2% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
