Postal entity record
US 63304 Postal Code Data Source-backed
63304 postal code facts for Saint Charles, US: region, coordinates, source, and nearby postal codes.
CountryUS
PlaceSaint Charles
RegionMO
Nearby rows12
Key metadata
| Place | Saint Charles |
|---|---|
| Admin area | Missouri / MO |
| Local area | Saint Charles |
| Coordinates | 38.7378, -90.6234 |
| GeoNames accuracy | 4 |
| Source | GeoNames postal code data |
| License | GeoNames postal data; provided as-is with attribution required. |
| Snapshot date | 2026-06-02 |
What this record means
This row links US 63304 to Saint Charles, the available admin area, centroid coordinates, source accuracy, and source snapshot metadata.
Use it as a reference-data join for cleaning CRM rows, grouping operational reports, preparing territory QA, or checking whether an imported postal value has a source-backed match.
What the centroid can support
The latitude and longitude represent a postal centroid from the source snapshot. They are useful for approximate map previews, nearby-record review, deduplication checks, and distance-based QA.
They should not be treated as an official delivery boundary, address-level geocode, tax boundary, or service-area guarantee.
Sample CSV enrichment output
| Input field | Added output | Example value |
|---|---|---|
| postal_code | matched_place | Saint Charles |
| postal_code | admin_area | Missouri |
| postal_code | centroid | 38.7378, -90.6234 |
Nearby postal codes
| Code | Place | Region | Distance |
|---|---|---|---|
| 63338 | Cottleville | Missouri | 1.7 mi |
| 63376 | Saint Peters | Missouri | 2.9 mi |
| 63303 | Saint Charles | Missouri | 4.4 mi |
| 63346 | Flinthill | Missouri | 4.8 mi |
| 63006 | Chesterfield | Missouri | 5.7 mi |
| 63368 | O Fallon | Missouri | 5.8 mi |
| 63005 | Chesterfield | Missouri | 7.3 mi |
| 63017 | Chesterfield | Missouri | 7.7 mi |
| 63301 | Saint Charles | Missouri | 7.7 mi |
| 63302 | Saint Charles | Missouri | 8.3 mi |
| 63045 | Earth City | Missouri | 8.7 mi |
| 63366 | O Fallon | Missouri | 8.8 mi |