Overview
- District ID
- il-hd-081
- State
- Illinois
- Chamber
- Lower chamber
- District Code
- 081
- Land Area
- 29.9 sq mi
- Water Area
- 0.49 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 |
|---|
| DuPage County | 29.91 sq mi | 100.0% | 9.1% |
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 6 | 55,056 | 50.7% | 7.3% | 45.1% |
| IL District 11 | 53,433 | 49.3% | 7.1% | 54.9% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 86,236
- Active Voters
- 78,780 (91.4%)
Party Registration
This state's voter file does not record party registration.
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 19,240 (22.3%) | 2,062 (2.4%) | 0 (0.0%) |
| 2023–2024 | 60,393 (70.0%) | 10,466 (12.1%) | 6,013 (7.0%) |
| 2021–2022 | 46,654 (54.1%) | 10,842 (12.6%) | 8,412 (9.8%) |
| 2019–2020 | 58,300 (67.6%) | 15,533 (18.0%) | 4,561 (5.3%) |
| 2017–2018 | 44,158 (51.2%) | 11,412 (13.2%) | 8,106 (9.4%) |
| 2015–2016 | 45,906 (53.2%) | 12,802 (14.8%) | 13,799 (16.0%) |
| 2013–2014 | 29,387 (34.1%) | 1,365 (1.6%) | 9,730 (11.3%) |
| 2011–2012 | 36,143 (41.9%) | 2,370 (2.7%) | 9,411 (10.9%) |
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
- 108,712 (± 2,009)
- Median Age
- 42.3
- Median Household Income
- $120,254 (± $5,764)
- High School Graduate or Higher (age 25+)
- 96.1%
- Bachelor's Degree or Higher (age 25+)
- 58.8%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 23,185 | 21.3% |
| 18 to 64 | 65,167 | 59.9% |
| 65 and over | 20,360 | 18.7% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 8,752 | 8.1% |
| White, not Hispanic | 77,933 | 71.7% |
| Black, not Hispanic | 3,557 | 3.3% |
| Asian, not Hispanic | 13,513 | 12.4% |
| American Indian / Alaska Native, not Hispanic | 26 | 0.0% |
| Native Hawaiian / Pacific Islander, not Hispanic | 0 | 0.0% |
| Some other race, not Hispanic | 540 | 0.5% |
| Two or more races, not Hispanic | 4,391 | 4.0% |
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
- 101,643
- Citizen Voting Age Population (CVAP)
- 79,084
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 94,376 | 92.9% |
| Hispanic | 7,270 | 7.2% |
| White | 77,645 | 76.4% |
| Black | 3,507 | 3.5% |
| Asian | 10,177 | 10.0% |
| American Indian / Alaska Native | 27 | 0.0% |
| Native Hawaiian / Pacific Islander | 0 | 0.0% |
| Two or More Races | 149 | 0.1% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 74,116 | 93.7% |
| Hispanic | 4,966 | 6.3% |
| White | 61,652 | 78.0% |
| Black | 3,667 | 4.6% |
| Asian | 8,564 | 10.8% |
| American Indian / Alaska Native | 238 | 0.3% |
| Native Hawaiian / Pacific Islander | 2 | 0.0% |
| Two or More Races | 102 | 0.1% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
