📍 View location on OpenStreetMap (38.740130, -90.542660)
| Data Metric | Local Statistic |
|---|---|
| Postal / Zip Code | 63303 |
| Primary City | Saint Charles |
| State / Province | MO |
| County | St. Charles |
| Total Population | 46,089 |
| Population Density | 900.8 people/sq mi |
| Timezone | America/Chicago |
| Metric | ZIP 63303 | St. Charles County records | MO records |
|---|---|---|---|
| Population estimate | 46,089 | 416,486 (sum) | 6,191,989 (sum) |
| Population Density | 900.8 /sq mi | -- | -- |
| County population rank | #6 of 14 | -- | -- |
| State population rank | #15 of 1,021 | -- | -- |
Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.
| ZIP Code | City | Distance | Population estimate |
|---|---|---|---|
| ZIP 63146 | Saint Louis | 4.5 mi | 30,678 |
| ZIP 63045 | Earth City | 4.6 mi | N/A |
| ZIP 63043 | Maryland Heights | 4.7 mi | 21,924 |
| ZIP 63376 | Saint Peters | 5.7 mi | 74,962 |
| ZIP 63017 | Chesterfield | 6.1 mi | 43,243 |
Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →