Postal entity record
US 57233 Postal Code Data Source-backed
57233 postal code facts for Erwin, US: region, coordinates, source, and nearby postal codes.
CountryUS
PlaceErwin
RegionSD
Nearby rows12
Key metadata
| Place | Erwin |
|---|---|
| Admin area | South Dakota / SD |
| Local area | Kingsbury |
| Coordinates | 44.4915, -97.4103 |
| 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 57233 to Erwin, 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 | Erwin |
| postal_code | admin_area | South Dakota |
| postal_code | centroid | 44.4915, -97.4103 |
Nearby postal codes
| Code | Place | Region | Distance |
|---|---|---|---|
| 57221 | Bryant | South Dakota | 7.7 mi |
| 57249 | Lake Preston | South Dakota | 8.6 mi |
| 57214 | Badger | South Dakota | 9.5 mi |
| 57231 | De Smet | South Dakota | 10.5 mi |
| 57248 | Lake Norden | South Dakota | 12.1 mi |
| 57241 | Hayti | South Dakota | 14.9 mi |
| 57278 | Willow Lake | South Dakota | 16 mi |
| 57271 | Vienna | South Dakota | 17.9 mi |
| 57051 | Oldham | South Dakota | 18.4 mi |
| 57212 | Arlington | South Dakota | 18.9 mi |
| 57242 | Hazel | South Dakota | 19 mi |
| 57353 | Iroquois | South Dakota | 24.1 mi |