Postal entity record
US 52004 Postal Code Data Source-backed
52004 postal code facts for Dubuque, US: region, coordinates, source, and nearby postal codes.
CountryUS
PlaceDubuque
RegionIA
Nearby rows12
Key metadata
| Place | Dubuque |
|---|---|
| Admin area | Iowa / IA |
| Local area | Dubuque |
| Coordinates | 42.5006, -90.6646 |
| 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 52004 to Dubuque, 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 | Dubuque |
| postal_code | admin_area | Iowa |
| postal_code | centroid | 42.5006, -90.6646 |
Nearby postal codes
| Code | Place | Region | Distance |
|---|---|---|---|
| 52099 | Dubuque | Iowa | 0 mi |
| 52001 | Dubuque | Iowa | 1.3 mi |
| 52003 | Dubuque | Iowa | 2.6 mi |
| 61025 | East Dubuque | Illinois | 3.2 mi |
| 52002 | Dubuque | Iowa | 3.8 mi |
| 53812 | Kieler | Wisconsin | 6.4 mi |
| 53824 | Sinsinawa | Wisconsin | 6.6 mi |
| 53811 | Hazel Green | Wisconsin | 8.2 mi |
| 52068 | Peosta | Iowa | 8.4 mi |
| 53808 | Dickeyville | Wisconsin | 9.4 mi |
| 52039 | Durango | Iowa | 10.6 mi |
| 52073 | Sherrill | Iowa | 11 mi |