Postal entity record
US 57239 Postal Code Data Source-backed
57239 postal code facts for Grenville, US: region, coordinates, source, and nearby postal codes.
CountryUS
PlaceGrenville
RegionSD
Nearby rows12
Key metadata
| Place | Grenville |
|---|---|
| Admin area | South Dakota / SD |
| Local area | Day |
| Coordinates | 45.5097, -97.3092 |
| 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 57239 to Grenville, 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 | Grenville |
| postal_code | admin_area | South Dakota |
| postal_code | centroid | 45.5097, -97.3092 |
Nearby postal codes
| Code | Place | Region | Distance |
|---|---|---|---|
| 57232 | Eden | South Dakota | 8.3 mi |
| 57273 | Waubay | South Dakota | 9.1 mi |
| 57261 | Roslyn | South Dakota | 11.2 mi |
| 57247 | Lake City | South Dakota | 12.6 mi |
| 57257 | Peever | South Dakota | 14.9 mi |
| 57262 | Sisseton | South Dakota | 16.1 mi |
| 57266 | Summit | South Dakota | 16.9 mi |
| 57274 | Webster | South Dakota | 17.1 mi |
| 57256 | Ortley | South Dakota | 17.8 mi |
| 57279 | Wilmot | South Dakota | 23 mi |
| 57270 | Veblen | South Dakota | 23.8 mi |
| 57468 | Pierpont | South Dakota | 24.4 mi |