Postal entity record
US 57657 Postal Code Data Source-backed
57657 postal code facts for Trail City, US: region, coordinates, source, and nearby postal codes.
CountryUS
PlaceTrail City
RegionSD
Nearby rows12
Key metadata
| Place | Trail City |
|---|---|
| Admin area | South Dakota / SD |
| Local area | Corson |
| Coordinates | 45.4725, -100.7254 |
| 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 57657 to Trail 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 | Trail City |
| postal_code | admin_area | South Dakota |
| postal_code | centroid | 45.4725, -100.7254 |
Nearby postal codes
| Code | Place | Region | Distance |
|---|---|---|---|
| 57630 | Glencross | South Dakota | 9.6 mi |
| 57639 | Little Eagle | South Dakota | 14.6 mi |
| 57601 | Mobridge | South Dakota | 15 mi |
| 57656 | Timber Lake | South Dakota | 16 mi |
| 57661 | Whitehorse | South Dakota | 16 mi |
| 57658 | Wakpala | South Dakota | 18.3 mi |
| 57652 | Ridgeview | South Dakota | 19.6 mi |
| 57631 | Glenham | South Dakota | 22.4 mi |
| 57641 | Mc Intosh | South Dakota | 26.4 mi |
| 57621 | Bullhead | South Dakota | 26.6 mi |
| 57642 | Mc Laughlin | South Dakota | 29 mi |
| 57420 | Akaska | South Dakota | 31 mi |