Jacksonville, IL Demographics
Jacksonville, IL is the 147th most populous of 1464 cities in Illinois, with 17,616 residents across 11 square miles. That is about 1,668 people per square mile.
At the 2020 census
| Population | 17,616 |
|---|---|
| Land area | 11 sq mi |
| Density | 1,668 / sq mi |
Data: 2020 Decennial Census · land area from Census TIGER/Line
How Jacksonville, IL compares to the US
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About this page
City statistics cover the municipal boundary only, not the wider metro area.
Figures come from the 2020 census and the American Community Survey, compared against national averages.