Illinois State House District 99
Safe Republican — 109K residents
Illinois State House District 99 is a state house district that has a population of 108,582. In the 2024 presidential election, it voted Republican with a margin of R+40.1. Akashic Edge tracks 5 presidential elections here, dating back to 2008.
| Year | Dem % | Rep % | Margin | Swing |
|---|---|---|---|---|
| 2024 | 29.0% | 69.1% | R+40.1 | D+0.6 |
| 2020* | 28.6% | 69.3% | R+40.7 | R+2.5 |
| 2016* | 28.1% | 66.3% | R+38.2 | R+13.0 |
| 2012* | 37.4% | 62.6% | R+25.3 | R+13.3 |
| 2008* | 43.0% | 54.9% | R+11.9 | — |
* Pre-2022 results projected onto current district boundaries. Actual boundaries at the time of the election may have differed.
What defines IL-HD-99?
It has a working-class, predominantly white electorate — strong Republican base territory.
Similar state house districts
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Key Insights
- Has voted Republican in the last 5 presidential elections
- Latest election (2024) was a Republican landslide with a 40.1% margin
- Highly elastic — margins have ranged 28.7 points across recent elections, suggesting a volatile electorate
Who Lives Here
| Group | IL-HD-99 | State | National |
|---|---|---|---|
White (Non-Hispanic) | 84.3% | 58.1% | 57.4% |
Black / African American | 6.0% | 13.6% | 12.2% |
Hispanic / Latino | 4.7% | 18.8% | 19.3% |
Multiracial / Other | 3.8% | 2.9% | 4.0% |
Asian | 0.8% | 6.0% | 6.0% |
Native American / Alaska Native | 0.3% | 0.6% | 0.9% |
Native Hawaiian / Pacific Islander | 0.1% | <0.1% | 0.2% |
Who lives in Illinois State House District 99? 108,582 residents as of the 2020 Census.
Demographics
Scale, voting-age share, and this geography's footprint inside the national electorate.
Income, attainment, and ownership indicators that often shape coalition structure and turnout behavior.
Age structure, language use, and nativity signals that explain how this geography differs from state and nation.
Turnout in IL-HD-99
How competitive is IL-HD-99?
Other Illinois State House Districts
117 total| Name | Margin ↓ |
|---|---|
| IL-HD-25 | D+77.3 |
| IL-HD-13 | D+77.3 |
| IL-HD-14 | D+76.7 |
| IL-HD-05 | D+73.6 |
| IL-HD-11 | D+72.0 |
| IL-HD-10 | D+69.4 |
| IL-HD-26 | D+68.3 |
| IL-HD-18 | D+68.1 |
| IL-HD-78 | D+67.1 |
| IL-HD-33 | D+65.8 |
| IL-HD-40 | D+64.3 |
| IL-HD-09 | D+64.2 |
| IL-HD-04 | D+63.3 |
| IL-HD-06 | D+61.7 |
| IL-HD-12 | D+61.6 |
| IL-HD-39 | D+61.1 |
| IL-HD-103 | D+56.4 |
| IL-HD-34 | D+55.0 |
| IL-HD-30 | D+55.0 |
| IL-HD-08 | D+53.6 |
| IL-HD-07 | D+53.5 |
| IL-HD-03 | D+51.5 |
| IL-HD-32 | D+51.1 |
| IL-HD-31 | D+42.2 |
| IL-HD-58 | D+40.4 |