Postal entity record
US 57038 Postal Code Data Source-backed
57038 postal code facts for Jefferson, US: region, coordinates, source, and nearby postal codes.
CountryUS
PlaceJefferson
RegionSD
Nearby rows12
Key metadata
| Place | Jefferson |
|---|---|
| Admin area | South Dakota / SD |
| Local area | Union |
| Coordinates | 42.6013, -96.5784 |
| 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 57038 to Jefferson, 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 | Jefferson |
| postal_code | admin_area | South Dakota |
| postal_code | centroid | 42.6013, -96.5784 |
Nearby postal codes
| Code | Place | Region | Distance |
|---|---|---|---|
| 57049 | North Sioux City | South Dakota | 6.4 mi |
| 68770 | Ponca | Nebraska | 7.2 mi |
| 51109 | Sioux City | Iowa | 7.7 mi |
| 51062 | Westfield | Iowa | 7.8 mi |
| 51103 | Sioux City | Iowa | 10 mi |
| 68743 | Jackson | Nebraska | 10.3 mi |
| 51104 | Sioux City | Iowa | 10.5 mi |
| 57025 | Elk Point | South Dakota | 11 mi |
| 51101 | Sioux City | Iowa | 11.5 mi |
| 51108 | Sioux City | Iowa | 11.6 mi |
| 51105 | Sioux City | Iowa | 12 mi |
| 68776 | South Sioux City | Nebraska | 12.4 mi |