Postal entity record
US 61257 Postal Code Data Source-backed
61257 postal code facts for Hillsdale, US: region, coordinates, source, and nearby postal codes.
CountryUS
PlaceHillsdale
RegionIL
Nearby rows12
Key metadata
| Place | Hillsdale |
|---|---|
| Admin area | Illinois / IL |
| Local area | Rock Island |
| Coordinates | 41.5929, -90.2263 |
| 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 61257 to Hillsdale, 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 | Hillsdale |
| postal_code | admin_area | Illinois |
| postal_code | centroid | 41.5929, -90.2263 |
Nearby postal codes
| Code | Place | Region | Distance |
|---|---|---|---|
| 61275 | Port Byron | Illinois | 5.2 mi |
| 61278 | Rapids City | Illinois | 6.1 mi |
| 52753 | Le Claire | Iowa | 7.1 mi |
| 61242 | Cordova | Illinois | 8.1 mi |
| 61250 | Erie | Illinois | 8.5 mi |
| 61236 | Barstow | Illinois | 8.7 mi |
| 61241 | Colona | Illinois | 8.7 mi |
| 61254 | Geneseo | Illinois | 9 mi |
| 61256 | Hampton | Illinois | 9.8 mi |
| 52768 | Princeton | Iowa | 9.8 mi |
| 52767 | Pleasant Valley | Iowa | 10.2 mi |
| 61239 | Carbon Cliff | Illinois | 10.9 mi |