Illinois State House District 30

State Legislative District Profile (Lower Chamber)

Overview

District ID
il-hd-030
State
Illinois
Chamber
Lower chamber
District Code
030
Land Area
38.2 sq mi
Water Area
0.15 sq mi

Boundary

Boundary of Illinois State House District 30

Boundary as GeoJSON

Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.

Counties

CountyOverlapShare of district landShare of county land
Cook County38.23 sq mi100.0%4.0%

Showing all 1 county

Places

PlaceOverlapShare of district landShare of place land
Harvey city6.21 sq mi16.2%100.0%
Markham city5.31 sq mi13.9%98.2%
Homewood village4.38 sq mi11.5%84.1%
Flossmoor village3.48 sq mi9.1%95.0%
South Holland village2.64 sq mi6.9%36.5%
Oak Forest city2.49 sq mi6.5%41.3%
Midlothian village2.20 sq mi5.7%77.9%
Dolton village2.15 sq mi5.6%47.1%
Olympia Fields village1.25 sq mi3.3%42.5%
Dixmoor village1.25 sq mi3.3%99.8%
East Hazel Crest village0.76 sq mi2.0%97.5%
Hazel Crest village0.67 sq mi1.7%19.7%
Phoenix village0.46 sq mi1.2%99.9%
Posen village0.42 sq mi1.1%35.9%
Tinley Park village0.40 sq mi1.1%2.5%
Thornton village0.31 sq mi0.8%13.2%
Chicago Heights city0.03 sq mi0.1%0.2%
Robbins village0.00 sq mi<0.1%0.2%
Country Club Hills city0.00 sq mi<0.1%<0.1%

Showing all 19 places

Overlapping Congressional Districts

Congressional districtPopulation in bothShare of this district's populationShare of the congressional district's populationShare of this district's land
IL District 274,94369.1%9.9%71.5%
IL District 131,75229.3%4.2%27.7%
IL District 61,8301.7%0.2%0.7%

Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).

Voters

Registered Voters
82,331
Active Voters
78,992 (95.9%)

Party Registration

This state's voter file does not record party registration.

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2025–202614,760 (17.9%)1,845 (2.2%)0 (0.0%)
2023–202444,307 (53.8%)10,937 (13.3%)1,539 (1.9%)
2021–202231,064 (37.7%)10,729 (13.0%)1,862 (2.3%)
2019–202046,431 (56.4%)19,142 (23.3%)1,054 (1.3%)
2017–201835,707 (43.4%)16,406 (19.9%)2,253 (2.7%)
2015–201640,649 (49.4%)23,363 (28.4%)3,805 (4.6%)
2013–201425,907 (31.5%)7,376 (9.0%)2,092 (2.5%)
2011–201233,682 (40.9%)8,601 (10.4%)2,051 (2.5%)

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
107,368 (± 2,412)
Median Age
39.0
Median Household Income
$73,215 (± $4,453)
High School Graduate or Higher (age 25+)
89.3%
Bachelor's Degree or Higher (age 25+)
27.6%

Population by Age

GroupPeopleShare
Under 1825,76424.0%
18 to 6463,21958.9%
65 and over18,38517.1%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)23,26721.7%
White, not Hispanic26,72824.9%
Black, not Hispanic51,70348.2%
Asian, not Hispanic2,0891.9%
American Indian / Alaska Native, not Hispanic900.1%
Native Hawaiian / Pacific Islander, not Hispanic320.0%
Some other race, not Hispanic2620.2%
Two or more races, not Hispanic3,1973.0%

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
101,356
Citizen Voting Age Population (CVAP)
75,716

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic82,80981.7%
Hispanic18,54218.3%
White27,13026.8%
Black51,51450.8%
Asian1,4631.4%
American Indian / Alaska Native900.1%
Native Hawaiian / Pacific Islander330.0%
Two or More Races5190.5%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic64,22784.8%
Hispanic11,49215.2%
White22,61329.9%
Black39,80752.6%
Asian1,2581.7%
American Indian / Alaska Native4760.6%
Native Hawaiian / Pacific Islander290.0%
Two or More Races2210.3%

Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).