Affton, Missouri
Affton, Missouri | |
|---|---|
Buildings in Affton, Missouri, October 2012 | |
Location of Affton, Missouri | |
| Coordinates: 38°33′00″N 90°19′35″W / 38.55000°N 90.32639°W | |
| Country | United States |
| State | Missouri |
| County | St. Louis |
| Townships | Concord, Gravois |
| Area | |
• Total | 4.57 sq mi (11.84 km2) |
| • Land | 4.57 sq mi (11.84 km2) |
| • Water | 0 sq mi (0.00 km2) |
| Elevation | 558 ft (170 m) |
| Population (2020) | |
• Total | 20,417 |
| • Density | 4,467.2/sq mi (1,724.78/km2) |
| Time zone | UTC-6 (Central (CST)) |
| • Summer (DST) | UTC-5 (CDT) |
| ZIP code | 63123 |
| FIPS code | 29-00280 |
| GNIS feature ID | 2393314 |
Affton is an unincorporated community and census-designated place (CDP) in south St. Louis County, Missouri, United States, near St. Louis. The population was 20,417 at the 2020 United States census.