Postal entity record
US 60548 Postal Code Data Source-backed
60548 postal code facts for Sandwich, US: region, coordinates, source, and nearby postal codes.
CountryUS
PlaceSandwich
RegionIL
Nearby rows12
Key metadata
| Place | Sandwich |
|---|---|
| Admin area | Illinois / IL |
| Local area | DeKalb |
| Coordinates | 41.6353, -88.6393 |
| 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 60548 to Sandwich, 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 | Sandwich |
| postal_code | admin_area | Illinois |
| postal_code | centroid | 41.6353, -88.6393 |
Nearby postal codes
| Code | Place | Region | Distance |
|---|---|---|---|
| 60552 | Somonauk | Illinois | 2.2 mi |
| 60536 | Millbrook | Illinois | 5.1 mi |
| 60537 | Millington | Illinois | 5.5 mi |
| 60545 | Plano | Illinois | 5.7 mi |
| 60531 | Leland | Illinois | 7.1 mi |
| 60551 | Sheridan | Illinois | 8.4 mi |
| 60520 | Hinckley | Illinois | 9.2 mi |
| 60541 | Newark | Illinois | 9.5 mi |
| 60511 | Big Rock | Illinois | 10 mi |
| 60560 | Yorkville | Illinois | 10.1 mi |
| 60556 | Waterman | Illinois | 10.6 mi |
| 60549 | Serena | Illinois | 11 mi |