Overview
- District ID
- il-hd-055
- State
- Illinois
- Chamber
- Lower chamber
- District Code
- 055
- Land Area
- 15.9 sq mi
- Water Area
- 0.13 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 |
|---|
| Cook County | 15.88 sq mi | 100.0% | 1.7% |
Showing all 1 county
Places
Showing all 7 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 5 | 58,081 | 53.4% | 7.7% | 51.8% |
| IL District 8 | 30,904 | 28.4% | 4.1% | 25.3% |
| IL District 9 | 19,701 | 18.1% | 2.6% | 22.9% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 72,557
- Active Voters
- 69,499 (95.8%)
Party Registration
This state's voter file does not record party registration.
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 12,734 (17.6%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 45,683 (63.0%) | 7,707 (10.6%) | 3,270 (4.5%) |
| 2021–2022 | 30,352 (41.8%) | 6,654 (9.2%) | 4,432 (6.1%) |
| 2019–2020 | 44,887 (61.9%) | 12,334 (17.0%) | 2,458 (3.4%) |
| 2017–2018 | 31,693 (43.7%) | 9,643 (13.3%) | 4,299 (5.9%) |
| 2015–2016 | 35,592 (49.1%) | 12,683 (17.5%) | 8,315 (11.5%) |
| 2013–2014 | 21,339 (29.4%) | 2,092 (2.9%) | 4,365 (6.0%) |
| 2011–2012 | 25,830 (35.6%) | 2,980 (4.1%) | 4,745 (6.5%) |
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
- 107,589 (± 2,458)
- Median Age
- 42.2
- Median Household Income
- $98,342 (± $5,887)
- High School Graduate or Higher (age 25+)
- 92.6%
- Bachelor's Degree or Higher (age 25+)
- 49.9%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 24,798 | 23.0% |
| 18 to 64 | 62,588 | 58.2% |
| 65 and over | 20,203 | 18.8% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 15,235 | 14.2% |
| White, not Hispanic | 66,578 | 61.9% |
| Black, not Hispanic | 3,375 | 3.1% |
| Asian, not Hispanic | 18,634 | 17.3% |
| American Indian / Alaska Native, not Hispanic | 45 | 0.0% |
| Native Hawaiian / Pacific Islander, not Hispanic | 0 | 0.0% |
| Some other race, not Hispanic | 404 | 0.4% |
| Two or more races, not Hispanic | 3,318 | 3.1% |
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
- 94,045
- Citizen Voting Age Population (CVAP)
- 70,637
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 81,691 | 86.9% |
| Hispanic | 12,356 | 13.1% |
| White | 62,837 | 66.8% |
| Black | 2,867 | 3.0% |
| Asian | 13,610 | 14.5% |
| American Indian / Alaska Native | 47 | 0.0% |
| Native Hawaiian / Pacific Islander | 0 | 0.0% |
| Two or More Races | 298 | 0.3% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 62,562 | 88.6% |
| Hispanic | 8,076 | 11.4% |
| White | 49,354 | 69.9% |
| Black | 2,377 | 3.4% |
| Asian | 10,486 | 14.8% |
| American Indian / Alaska Native | 231 | 0.3% |
| Native Hawaiian / Pacific Islander | 0 | 0.0% |
| Two or More Races | 129 | 0.2% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
