Crystal Lake, IL Demographics
Crystal Lake, IL is the 40th most populous of 1464 cities in Illinois, with 40,269 residents across 19 square miles. That is about 2,121 people per square mile.
At the 2020 census
| Population | 40,269 |
|---|---|
| Land area | 19 sq mi |
| Density | 2,121 / sq mi |
Data: 2020 Decennial Census · land area from Census TIGER/Line
How Crystal Lake, 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.