Union, MO Demographics
Union, MO is the 74th most populous of 1082 cities in Missouri, with 12,348 residents across 9 square miles. That is about 1,368 people per square mile.
At the 2020 census
| Population | 12,348 |
|---|---|
| Land area | 9 sq mi |
| Density | 1,368 / sq mi |
Data: 2020 Decennial Census · land area from Census TIGER/Line
How Union, MO 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.