Overview
- District ID
- il-sd-030
- State
- Illinois
- Chamber
- Upper chamber (state senate)
- District Code
- 030
- Land Area
- 71.6 sq mi
- Water Area
- 1.6 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 |
|---|
| Lake County | 69.68 sq mi | 97.4% | 15.7% |
| Cook County | 1.84 sq mi | 2.6% | 0.2% |
Showing all 2 counties
Places
Showing all 18 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 10 | 206,545 | 95.1% | 27.4% | 96.5% |
| IL District 9 | 10,709 | 4.9% | 1.4% | 3.5% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 128,445
- Active Voters
- 115,537 (90.0%)
Party Registration
This state's voter file does not record party registration.
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 16,415 (12.8%) | 2,886 (2.2%) | 0 (0.0%) |
| 2023–2024 | 70,964 (55.2%) | 9,189 (7.2%) | 3,557 (2.8%) |
| 2021–2022 | 49,130 (38.2%) | 12,728 (9.9%) | 5,674 (4.4%) |
| 2019–2020 | 70,009 (54.5%) | 20,359 (15.9%) | 3,010 (2.3%) |
| 2017–2018 | 51,312 (39.9%) | 14,996 (11.7%) | 5,221 (4.1%) |
| 2015–2016 | 57,635 (44.9%) | 21,958 (17.1%) | 11,079 (8.6%) |
| 2013–2014 | 34,374 (26.8%) | 4,435 (3.5%) | 5,474 (4.3%) |
| 2011–2012 | 45,504 (35.4%) | 5,955 (4.6%) | 6,516 (5.1%) |
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
- 215,188 (± 2,330)
- Median Age
- 38.1
- Median Household Income
- $89,685 (± $2,890)
- High School Graduate or Higher (age 25+)
- 84.7%
- Bachelor's Degree or Higher (age 25+)
- 41.2%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 50,654 | 23.5% |
| 18 to 64 | 132,354 | 61.5% |
| 65 and over | 32,180 | 15.0% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 80,270 | 37.3% |
| White, not Hispanic | 75,191 | 34.9% |
| Black, not Hispanic | 21,930 | 10.2% |
| Asian, not Hispanic | 29,986 | 13.9% |
| American Indian / Alaska Native, not Hispanic | 309 | 0.1% |
| Native Hawaiian / Pacific Islander, not Hispanic | 125 | 0.1% |
| Some other race, not Hispanic | 1,329 | 0.6% |
| Two or more races, not Hispanic | 6,048 | 2.8% |
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
- 175,877
- Citizen Voting Age Population (CVAP)
- 128,677
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 118,594 | 67.4% |
| Hispanic | 57,281 | 32.6% |
| White | 72,844 | 41.4% |
| Black | 21,743 | 12.4% |
| Asian | 18,738 | 10.7% |
| American Indian / Alaska Native | 310 | 0.2% |
| Native Hawaiian / Pacific Islander | 46 | 0.0% |
| Two or More Races | 844 | 0.5% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 94,025 | 73.1% |
| Hispanic | 34,651 | 26.9% |
| White | 61,610 | 47.9% |
| Black | 17,844 | 13.9% |
| Asian | 13,559 | 10.5% |
| American Indian / Alaska Native | 965 | 0.7% |
| Native Hawaiian / Pacific Islander | 41 | 0.0% |
| Two or More Races | 445 | 0.3% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
