Overview
- District ID
- il-sd-028
- State
- Illinois
- Chamber
- Upper chamber (state senate)
- District Code
- 028
- Land Area
- 55.6 sq mi
- Water Area
- 0.75 sq mi
Boundary
Boundary as GeoJSON
Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.
Counties
Showing all 2 counties
Places
Showing all 16 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 8 | 121,239 | 55.8% | 16.1% | 60.4% |
| IL District 5 | 64,378 | 29.7% | 8.5% | 20.4% |
| IL District 9 | 19,701 | 9.1% | 2.6% | 6.5% |
| IL District 3 | 11,781 | 5.4% | 1.6% | 12.6% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 142,883
- Active Voters
- 136,660 (95.6%)
Party Registration
This state's voter file does not record party registration.
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 22,947 (16.1%) | <10 (—) | <10 (—) |
| 2023–2024 | 88,329 (61.8%) | 13,711 (9.6%) | 6,501 (4.5%) |
| 2021–2022 | 58,107 (40.7%) | 13,233 (9.3%) | 8,641 (6.0%) |
| 2019–2020 | 86,986 (60.9%) | 23,162 (16.2%) | 5,204 (3.6%) |
| 2017–2018 | 60,445 (42.3%) | 17,449 (12.2%) | 8,471 (5.9%) |
| 2015–2016 | 68,253 (47.8%) | 23,774 (16.6%) | 15,743 (11.0%) |
| 2013–2014 | 39,963 (28.0%) | 3,619 (2.5%) | 8,255 (5.8%) |
| 2011–2012 | 50,543 (35.4%) | 6,029 (4.2%) | 8,756 (6.1%) |
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
- 213,849 (± 3,228)
- Median Age
- 41.4
- Median Household Income
- $95,699 (± $2,833)
- High School Graduate or Higher (age 25+)
- 91.6%
- Bachelor's Degree or Higher (age 25+)
- 45.7%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 48,518 | 22.7% |
| 18 to 64 | 125,782 | 58.8% |
| 65 and over | 39,549 | 18.5% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 37,408 | 17.5% |
| White, not Hispanic | 122,872 | 57.5% |
| Black, not Hispanic | 8,898 | 4.2% |
| Asian, not Hispanic | 36,671 | 17.1% |
| American Indian / Alaska Native, not Hispanic | 86 | 0.0% |
| Native Hawaiian / Pacific Islander, not Hispanic | 17 | 0.0% |
| Some other race, not Hispanic | 810 | 0.4% |
| Two or more races, not Hispanic | 7,087 | 3.3% |
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
- 183,867
- Citizen Voting Age Population (CVAP)
- 138,679
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 154,714 | 84.1% |
| Hispanic | 29,156 | 15.9% |
| White | 115,174 | 62.6% |
| Black | 7,622 | 4.1% |
| Asian | 26,505 | 14.4% |
| American Indian / Alaska Native | 111 | 0.1% |
| Native Hawaiian / Pacific Islander | 21 | 0.0% |
| Two or More Races | 750 | 0.4% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 121,052 | 87.3% |
| Hispanic | 17,631 | 12.7% |
| White | 92,802 | 66.9% |
| Black | 5,946 | 4.3% |
| Asian | 21,337 | 15.4% |
| American Indian / Alaska Native | 642 | 0.5% |
| Native Hawaiian / Pacific Islander | 17 | 0.0% |
| Two or More Races | 408 | 0.3% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
