Weldon Spring, Missouri
| Weldon Spring, Missouri | |
|---|---|
| Welcome sign to Weldon Spring, Missouri in June 2018 | |
| Location of Weldon Spring, Missouri | |
| Coordinates: 38°43′0″N 90°38′57″W / 38.71667°N 90.64917°W | |
| Country | United States | 
| State | Missouri | 
| County | St. Charles | 
| Area | |
|  • Total | 7.78 sq mi (20.14 km2) | 
| • Land | 7.65 sq mi (19.81 km2) | 
| • Water | 0.13 sq mi (0.33 km2) | 
| Elevation | 541 ft (165 m) | 
| Population  (2020) | |
|  • Total | 5,326 | 
| • Density | 696.48/sq mi (268.91/km2) | 
| Time zone | UTC-6 (Central (CST)) | 
| • Summer (DST) | UTC-5 (CDT) | 
| FIPS code | 29-78314 | 
| GNIS feature ID | 0756882 | 
Weldon Spring is a city in St. Charles County, Missouri, United States. The population was 5,326 at the 2020 census.