Postal entity record
US 57646 Postal Code Data Source-backed
57646 postal code facts for Mound City, US: region, coordinates, source, and nearby postal codes.
CountryUS
PlaceMound City
RegionSD
Nearby rows12
Key metadata
| Place | Mound City |
|---|---|
| Admin area | South Dakota / SD |
| Local area | Campbell |
| Coordinates | 45.6786, -100.0479 |
| 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 57646 to Mound City, 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 | Mound City |
| postal_code | admin_area | South Dakota |
| postal_code | centroid | 45.6786, -100.0479 |
Nearby postal codes
| Code | Place | Region | Distance |
|---|---|---|---|
| 57632 | Herreid | South Dakota | 11.5 mi |
| 57472 | Selby | South Dakota | 13.8 mi |
| 57631 | Glenham | South Dakota | 14.7 mi |
| 57648 | Pollock | South Dakota | 18.6 mi |
| 57452 | Java | South Dakota | 19.3 mi |
| 57601 | Mobridge | South Dakota | 20.8 mi |
| 57658 | Wakpala | South Dakota | 23.5 mi |
| 57420 | Akaska | South Dakota | 24.2 mi |
| 57428 | Bowdle | South Dakota | 24.6 mi |
| 58581 | Zeeland | North Dakota | 26.2 mi |
| 58542 | Hague | North Dakota | 26.5 mi |
| 57448 | Hosmer | South Dakota | 28.2 mi |