Overview
- District ID
- il-sd-047
- State
- Illinois
- Chamber
- Upper chamber (state senate)
- District Code
- 047
- Land Area
- 5,992.6 sq mi
- Water Area
- 115.4 sq mi
Boundary
Boundary as GeoJSON
Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.
Counties
Showing all 15 counties
Places
Showing top 25 of 133 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 17 | 91,632 | 42.2% | 12.2% | 29.6% |
| IL District 15 | 66,134 | 30.4% | 8.8% | 57.4% |
| IL District 16 | 59,522 | 27.4% | 7.9% | 13.0% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 153,547
- Active Voters
- 149,480 (97.4%)
Party Registration
This state's voter file does not record party registration.
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 33,732 (22.0%) | 0 (0.0%) | 106 (0.1%) |
| 2023–2024 | 108,374 (70.6%) | 6,946 (4.5%) | 15,831 (10.3%) |
| 2021–2022 | 83,383 (54.3%) | 7,958 (5.2%) | 25,056 (16.3%) |
| 2019–2020 | 98,799 (64.3%) | 15,637 (10.2%) | 14,238 (9.3%) |
| 2017–2018 | 75,412 (49.1%) | 11,681 (7.6%) | 17,307 (11.3%) |
| 2015–2016 | 83,687 (54.5%) | 16,885 (11.0%) | 28,423 (18.5%) |
| 2013–2014 | 58,656 (38.2%) | 7,771 (5.1%) | 15,049 (9.8%) |
| 2011–2012 | 69,657 (45.4%) | 6,594 (4.3%) | 15,685 (10.2%) |
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
- 214,296 (± 1,306)
- Median Age
- 44.0
- Median Household Income
- $68,296 (± $1,320)
- High School Graduate or Higher (age 25+)
- 92.7%
- Bachelor's Degree or Higher (age 25+)
- 22.5%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 45,077 | 21.0% |
| 18 to 64 | 122,584 | 57.2% |
| 65 and over | 46,635 | 21.8% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 6,869 | 3.2% |
| White, not Hispanic | 195,158 | 91.1% |
| Black, not Hispanic | 3,629 | 1.7% |
| Asian, not Hispanic | 1,759 | 0.8% |
| American Indian / Alaska Native, not Hispanic | 344 | 0.2% |
| Native Hawaiian / Pacific Islander, not Hispanic | 46 | 0.0% |
| Some other race, not Hispanic | 345 | 0.2% |
| Two or more races, not Hispanic | 6,146 | 2.9% |
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
- 212,571
- Citizen Voting Age Population (CVAP)
- 167,655
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 206,586 | 97.2% |
| Hispanic | 5,981 | 2.8% |
| White | 197,061 | 92.7% |
| Black | 3,690 | 1.7% |
| Asian | 1,238 | 0.6% |
| American Indian / Alaska Native | 343 | 0.2% |
| Native Hawaiian / Pacific Islander | 47 | 0.0% |
| Two or More Races | 327 | 0.2% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 163,548 | 97.6% |
| Hispanic | 4,102 | 2.4% |
| White | 156,933 | 93.6% |
| Black | 3,787 | 2.3% |
| Asian | 1,304 | 0.8% |
| American Indian / Alaska Native | 1,352 | 0.8% |
| Native Hawaiian / Pacific Islander | 42 | 0.0% |
| Two or More Races | 141 | 0.1% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
