Postal entity record
US 54937 Postal Code Data Source-backed
54937 postal code facts for Fond Du Lac, US: region, coordinates, source, and nearby postal codes.
CountryUS
PlaceFond Du Lac
RegionWI
Nearby rows12
Key metadata
| Place | Fond Du Lac |
|---|---|
| Admin area | Wisconsin / WI |
| Local area | Fond du Lac |
| Coordinates | 43.765, -88.6057 |
| 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 54937 to Fond Du Lac, 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 | Fond Du Lac |
| postal_code | admin_area | Wisconsin |
| postal_code | centroid | 43.765, -88.6057 |
Nearby postal codes
| Code | Place | Region | Distance |
|---|---|---|---|
| 54974 | Rosendale | Wisconsin | 2.4 mi |
| 54932 | Eldorado | Wisconsin | 5.5 mi |
| 53065 | Oakfield | Wisconsin | 6 mi |
| 54936 | Fond Du Lac | Wisconsin | 8.4 mi |
| 54935 | Fond Du Lac | Wisconsin | 8.5 mi |
| 54979 | Van Dyne | Wisconsin | 8.9 mi |
| 53919 | Brandon | Wisconsin | 9.3 mi |
| 54964 | Pickett | Wisconsin | 10.8 mi |
| 53963 | Waupun | Wisconsin | 11.3 mi |
| 53006 | Brownsville | Wisconsin | 11.9 mi |
| 54971 | Ripon | Wisconsin | 13 mi |
| 53931 | Fairwater | Wisconsin | 13.1 mi |