St. Charles County, Missouri
St. Charles County profile, demographic data, and geographic information.
Cities & Towns in St. Charles County
Constituent municipalities and census communities located within St. Charles County.
| City / Town Name | Classification | Census GEOID | Land Area |
|---|---|---|---|
| Augusta town | Town | 2902512 | 1.03 sq mi |
| Cottleville city | City | 2916678 | 4.74 sq mi |
| Dardenne Prairie city | City | 2918253 | 5.34 sq mi |
| Defiance CDP | CDP | 2918910 | 1.01 sq mi |
| Flint Hill city | City | 2924688 | 3.03 sq mi |
| Foristell city | City | 2925120 | 6.04 sq mi |
| Josephville village | Village | 2937700 | 2.86 sq mi |
| Lake St. Louis city | City | 2940043 | 8.57 sq mi |
| New Melle city | City | 2952148 | 1.79 sq mi |
| O'Fallon city | City | 2954074 | 30.99 sq mi |
| Portage Des Sioux city | City | 2959150 | 0.58 sq mi |
| St. Charles city | City | 2964082 | 25.50 sq mi |
| St. Paul city | City | 2965108 | 7.22 sq mi |
| St. Peters city | City | 2965126 | 22.54 sq mi |
| Weldon Spring city | City | 2978314 | 7.65 sq mi |
| Weldon Spring Heights town | Town | 2978334 | 0.10 sq mi |
| Wentzville city | City | 2978442 | 22.17 sq mi |
| West Alton city | City | 2978514 | 28.79 sq mi |