County · GEOID 29183
St. Charles County, MO ZIP codes
15 ZIP/ZCTAs intersecting this county.
U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: County St. Charles County (GEOID 29183). Methodology
Combined population of ZIP/ZCTAs intersecting this county: 418,481 (15 ZIPs).
Combined population of ZIP/ZCTAs intersecting this county. Each intersecting ZIP contributes its full ZCTA population; overlap percents are descriptive only. This is not the Census county ACS headline above. Methodology
ZIP/ZCTA overlap with St. Charles County
Population overlap
Share of each ZIP/ZCTA’s population located within St. Charles County, based on ZIP Code Database county-overlap data. This is a population measure, not land-area overlap or the Census county population.
- 63301100.0%
Directory county
- 63303100.0%
Directory county
- 63304100.0%
Directory county
- 63332100.0%
Directory county
- 63341100.0%
Directory county
- 6334877.6%
Directory county
- 633574.9%
- 63365100.0%
Directory county
- 63366100.0%
Directory county
- 63367100.0%
Directory county
- 63368100.0%
Directory county
- 63373100.0%
Directory county
- 63376100.0%
Directory county
- 63385100.0%
Directory county
- 63386100.0%
Directory county
ZIP Code Database county-overlap table, field percent_of_zip_population_in_county, keyed by county_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
ZIP codes intersecting St. Charles County
| ZIP | City | County | Population | Income |
|---|---|---|---|---|
| 63301 | Saint Charles | St. Charles County | 51,625 | $83,551 |
| 63303 | Saint Charles | St. Charles County | 46,627 | $98,031 |
| 63304 | Saint Charles | St. Charles County | 43,389 | $114,124 |
| 63332 | Augusta | St. Charles County | 1,676 | $137,083 |
| 63341 | Defiance | St. Charles County | 3,554 | $177,583 |
| 63348 | Foristell | St. Charles County | 10,207 | $106,458 |
| 63357 | Marthasville | Warren County | 6,593 | $87,500 |
| 63365 | New Melle | St. Charles County | 56 | $41,125 |
| 63366 | O Fallon | St. Charles County | 54,449 | $98,237 |
| 63367 | Lake Saint Louis | St. Charles County | 27,893 | $134,932 |
| 63368 | O Fallon | St. Charles County | 45,862 | $118,811 |
| 63373 | Portage Des Sioux | St. Charles County | 717 | $77,250 |
| 63376 | Saint Peters | St. Charles County | 74,876 | $94,921 |
| 63385 | Wentzville | St. Charles County | 50,420 | $111,851 |
| 63386 | West Alton | St. Charles County | 537 | $125,313 |
USPS associates these ZIPs with St. Charles County
These codes list St. Charles County as a primary or acceptable city. They are not used for the ACS headline.
| ZIP | City | County | Population | Income |
|---|---|---|---|---|
| 63302 | Saint Charles | St. Charles County | 601 | — |
| 63338 | Cottleville | St. Charles County | 144 | — |
| 63346 | Flinthill | St. Charles County | 14 | — |