Postal entity record
US 57451 Postal Code Data Source-backed
57451 postal code facts for Ipswich, US: region, coordinates, source, and nearby postal codes.
CountryUS
PlaceIpswich
RegionSD
Nearby rows12
Key metadata
| Place | Ipswich |
|---|---|
| Admin area | South Dakota / SD |
| Local area | Edmunds |
| Coordinates | 45.4489, -99.0148 |
| 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 57451 to Ipswich, 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 | Ipswich |
| postal_code | admin_area | South Dakota |
| postal_code | centroid | 45.4489, -99.0148 |
Nearby postal codes
| Code | Place | Region | Distance |
|---|---|---|---|
| 57471 | Roscoe | South Dakota | 15.5 mi |
| 57456 | Leola | South Dakota | 19.3 mi |
| 57435 | Cresbard | South Dakota | 19.7 mi |
| 57448 | Hosmer | South Dakota | 24.3 mi |
| 57401 | Aberdeen | South Dakota | 25.7 mi |
| 57481 | Westport | South Dakota | 26 mi |
| 57460 | Mansfield | South Dakota | 26.2 mi |
| 57465 | Northville | South Dakota | 26.4 mi |
| 57438 | Faulkton | South Dakota | 26.6 mi |
| 57437 | Eureka | South Dakota | 27 mi |
| 57479 | Warner | South Dakota | 27.1 mi |
| 57466 | Onaka | South Dakota | 27.6 mi |