Union, Missouri
| Union, Missouri | |
|---|---|
| City of Union | |
| Motto(s): Treasuring Our Past, Building For Our Future. | |
| Location of Union, Missouri | |
| Coordinates: 38°26′59″N 91°01′04″W / 38.44972°N 91.01778°W | |
| Country | United States | 
| State | Missouri | 
| County | Franklin | 
| Founded | 1826 | 
| Designated (as the county seat) | 1827 | 
| Named after | The ideal of political unity. | 
| Area | |
|  • Total | 9.03 sq mi (23.38 km2) | 
| • Land | 9.03 sq mi (23.38 km2) | 
| • Water | 0.00 sq mi (0.00 km2) | 
| Elevation | 528 ft (161 m) | 
| Population  (2020) | |
|  • Total | 12,348 | 
| • Density | 1,368.20/sq mi (528.25/km2) | 
| Time zone | UTC-6 (Central (CST)) | 
| • Summer (DST) | UTC-5 (CDT) | 
| ZIP code | 63084 | 
| Area code | 636 | 
| FIPS code | 29-74626 | 
| GNIS feature ID | 2397086 | 
| Website | http://www.unionmissouri.gov/ | 
Union is a city in and the county seat of Franklin County, Missouri, United States. It is located on the Bourbeuse River, 50 miles (80 km) southwest of St. Louis. The population was 12,348 at the 2020 census.