Postal entity record
US 57481 Postal Code Data Source-backed
57481 postal code facts for Westport, US: region, coordinates, source, and nearby postal codes.
CountryUS
PlaceWestport
RegionSD
Nearby rows12
Key metadata
| Place | Westport |
|---|---|
| Admin area | South Dakota / SD |
| Local area | Brown |
| Coordinates | 45.6705, -98.5802 |
| 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 57481 to Westport, 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 | Westport |
| postal_code | admin_area | South Dakota |
| postal_code | centroid | 45.6705, -98.5802 |
Nearby postal codes
| Code | Place | Region | Distance |
|---|---|---|---|
| 57426 | Barnard | South Dakota | 5.9 mi |
| 57402 | Aberdeen | South Dakota | 12.4 mi |
| 57441 | Frederick | South Dakota | 12.7 mi |
| 57433 | Columbia | South Dakota | 12.8 mi |
| 57401 | Aberdeen | South Dakota | 14.8 mi |
| 57456 | Leola | South Dakota | 17.8 mi |
| 57427 | Bath | South Dakota | 18.4 mi |
| 57479 | Warner | South Dakota | 22.8 mi |
| 57446 | Hecla | South Dakota | 23.3 mi |
| 58436 | Ellendale | North Dakota | 23.5 mi |
| 57449 | Houghton | South Dakota | 25 mi |
| 57451 | Ipswich | South Dakota | 26 mi |