Niantic, IL Demographics
Niantic, IL is the 850th most populous of 1464 cities in Illinois, with 612 residents across 1 square miles. That is about 589 people per square mile.
At the 2020 census
| Population | 612 |
|---|---|
| Land area | 1 sq mi |
| Density | 589 / sq mi |
Data: 2020 Census · American Community Survey 2024
How Niantic, 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.