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Illinois's 15th Congressional District
The current officeholder, the 2024 result, and a precinct-level model you can run yourself — built from how Illinois actually voted.
Model Illinois's 15th Congressional District →
Current officeholder
Mary E. Miller Republican
2024 result
Republican R+97.6
2024 votes cast
268,634
Office
U.S. House
Who lives in this district
This district is home to about 749,694 people, median age 42.2, median household income $71,893.
Population
749,694
Median age
42.2
Median household income
$71,893
Bachelor's degree or higher
25.5%
Race & ethnicity: White 90.3% · Black 3.1% · Hispanic 2.9% · Asian 0.9%
Source: U.S. Census Bureau, 2019–2023 American Community Survey (5-year).
Precinct results — 2024 general
812 precincts reported in Illinois's 15th Congressional District's 2024 general election. The twenty largest:
| Precinct | Winner | Margin | Votes |
|---|---|---|---|
| 17019-MAHOMET 4 | Republican | R+93.3 | 1,834 |
| 17019-MAHOMET 1 | Republican | R+91.6 | 1,719 |
| 17115-MT. ZION 2 | Republican | R+97.2 | 1,554 |
| 17115-MT. ZION 1 | Republican | R+97.4 | 1,357 |
| 17115-LONG CREEK 2 | Republican | R+98.4 | 1,226 |
| 17019-ST. JOSEPH 2 | Republican | R+95.0 | 1,096 |
| 17019-MAHOMET 5 | Republican | R+94.8 | 979 |
| 17019-PHILO | Republican | R+96.1 | 955 |
| 17115-LONG CREEK 6 | Republican | R+96.7 | 947 |
| 17147-SANGAMON 2 | Republican | R+96.0 | 883 |
| 17019-ST. JOSEPH 1 | Republican | R+96.4 | 862 |
| 17019-MAHOMET 3 | Republican | R+94.3 | 854 |
| 17021-BUCKHART | Republican | R+98.1 | 854 |
| 17115-MAROA | Republican | R+98.2 | 852 |
| 17021-PANA #2 | Republican | R+98.0 | 847 |
| 17107-ATLANTA | Republican | R+97.5 | 844 |
| 17021-MAY | Republican | R+97.3 | 843 |
| 17041-TUSCOLA 1 | Republican | R+96.1 | 840 |
| 17019-MAHOMET 2 | Republican | R+92.6 | 829 |
| 17115-SOUTH WHEATLAND 2 | Republican | R+97.6 | 823 |
All 812 precincts are modelable — open the race in the simulator and drill to precinct grain.
Find your district
Enter a ZIP code or a district (e.g. NC-4) to find your U.S. House district and who represents it.
Model Illinois's 15th Congressional District in five steps
- Set the candidates. Name the contenders for the Illinois's 15th Congressional District (or keep the generic Democrat / Republican defaults). The map starts from the canonical mixed-grain 2024 presidential baseline.
- Apply a swing. Move vote share statewide, or by demographic cohort, with a slider. The map and the running tally recompute instantly.
- Model turnout. Mobilize or depress turnout for any group — turnout and persuasion are modeled separately, the way a real campaign thinks about them.
- Explore local geography. Zoom from the state through counties to the finest supported reporting grain and adjust the places available in the model.
- Roll up & share. Roll the result up to chamber control, then share the exact versioned scenario.
Open Illinois's 15th Congressional District in the simulator →