Postal entity record
US 37031 Postal Code Data Source-backed
37031 postal code facts for Castalian Springs, US: region, coordinates, source, and nearby postal codes.
CountryUS
PlaceCastalian Springs
RegionTN
Nearby rows12
Key metadata
| Place | Castalian Springs |
|---|---|
| Admin area | Tennessee / TN |
| Local area | Sumner |
| Coordinates | 36.3806, -86.3107 |
| 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 37031 to Castalian Springs, 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 | Castalian Springs |
| postal_code | admin_area | Tennessee |
| postal_code | centroid | 36.3806, -86.3107 |
Nearby postal codes
| Code | Place | Region | Distance |
|---|---|---|---|
| 37066 | Gallatin | Tennessee | 7.8 mi |
| 37074 | Hartsville | Tennessee | 7.9 mi |
| 37022 | Bethpage | Tennessee | 9.5 mi |
| 37087 | Lebanon | Tennessee | 11.8 mi |
| 37088 | Lebanon | Tennessee | 12 mi |
| 37186 | Westmoreland | Tennessee | 14.1 mi |
| 37057 | Dixon Springs | Tennessee | 15 mi |
| 37071 | Gladeville | Tennessee | 15.5 mi |
| 37136 | Norene | Tennessee | 15.5 mi |
| 37151 | Riddleton | Tennessee | 15.6 mi |
| 37148 | Portland | Tennessee | 16.9 mi |
| 37121 | Mount Juliet | Tennessee | 17 mi |