Complete ZIP Code Details
| ZIP Code | 63303 |
| City | Saint Charles |
| State | Missouri (MO) |
| County | St. Charles |
| Timezone | America/Chicago |
| Coordinates | 38.7401300, -90.5426600 |
| Population | 46,089 |
| ZIP Type | STANDARD |
| Country | United States |
| ZIP Code | 63303 |
| City | Saint Charles |
| State | Missouri (MO) |
| County | St. Charles |
| Timezone | America/Chicago |
| Coordinates | 38.7401300, -90.5426600 |
| Population | 46,089 |
| ZIP Type | STANDARD |
| Country | United States |