| Donald Trump ✓Republican | 56.8% | 3,750 |
|---|---|---|
| Kamala HarrisDemocratic | 41.7% | 2,753 |
| OtherAll other candidates | 1.4% | 95 |
| Year | Margin (D minus R) |
|---|---|
| 2008 | +6.3% |
| 2012 | −5.3% |
| 2016 | −15.5% |
| 2020 | −14.3% |
| 2024 | −15.1% |
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 2,753 | 3,750 | 6,598 | ||
| R | 2,886 | 3,873 | 6,913 | ||
| R | 2,765 | 3,887 | 7,221 | ||
| R | 3,126 | 3,476 | 6,602 | ||
| D | 3,946 | 3,471 | 7,579 |
Demographics
Demographic Profile
Key indicators compared across containing geographies
| Indicator | JacksonvilleCity | IllinoisState | United StatesNation |
|---|---|---|---|
| Race & Ethnicity | |||
| White | 82.0% | 61.0% | 61.0% |
| Black | 7.6% | 13.6% | 12.2% |
| Asian | 1.2% | 6.0% | 6.0% |
| Two or more races | 7.7% | 10.9% | 12.6% |
| Other race | 1.4% | 8.6% | 8.2% |
| Hispanic or Latino | 3.7% | 18.8% | 19.3% |
| Income & Age | |||
| Median household income | $65,432 | $83,390 | $84,427 |
| Poverty rate | 18.5% | 11.8% | 12.5% |
| Median age | 37.6 | 39.1 | 39.1 |
| Age 18–24 | 11.7% | 9.1% | 9.2% |
| Age 65 and older | 20.9% | 16.9% | 17.2% |
| Education & Language | |||
| Bachelor's degree or higher (25+) | 22.6% | 37.8% | 35.7% |
| Speaks a non-English language at home | 3.3% | 24.0% | 22.3% |
| Spanish | 2.0% | 14.0% | 13.6% |
| Ancestry | |||
| Largest ancestry | German 18.7% | German 16.1% | German 12.5% |
| 2nd-largest ancestry | English 16.5% | Irish 10.6% | English 9.5% |
| 3rd-largest ancestry | Irish 12.8% | English 6.9% | Irish 9.4% |
| Religion | |||
| Catholic | 11.9%County context | 24.2% | 18.6% |
| Evangelical Protestant | 11.6%County context | 11.7% | 16.5% |
| Unaffiliated or unclaimed | 58.7%County context | 49.2% | 51.5% |
| Mainline Protestant | 14.6%County context | 5.3% | 5.2% |
ACS values are survey estimates and may include margins of error.
Religion data may be available only at county or larger geographies. Sub-county values are labeled when inherited, modeled, or contextual.
Jacksonville sits in the Upper Midwest. In 2024 it voted Republican.
Across the recorded series it reached a Democratic high of 6.3 points in 2008 and a Republican high of 15.5 points in 2016. Between 2020 and 2024 the city moved 0.8 points toward the Republican candidate; the 2024 margin was 15.1 points.
A population of 18,014, a 82% non-Hispanic-white share, and a median household income of $65,432 describe the city.
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Jacksonville, Illinois. Akashic. https://akashic.app/city/1738115/. Accessed May 20, 2026. License: CC BY 4.0.