Postal entity record
US 61204 Postal Code Data Source-backed
61204 postal code facts for Rock Island, US: region, coordinates, source, and nearby postal codes.
CountryUS
PlaceRock Island
RegionIL
Nearby rows12
Key metadata
| Place | Rock Island |
|---|---|
| Admin area | Illinois / IL |
| Local area | Rock Island |
| Coordinates | 41.5549, -90.616 |
| 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 61204 to Rock Island, 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 | Rock Island |
| postal_code | admin_area | Illinois |
| postal_code | centroid | 41.5549, -90.616 |
Nearby postal codes
| Code | Place | Region | Distance |
|---|---|---|---|
| 52804 | Davenport | Iowa | 1.2 mi |
| 52806 | Davenport | Iowa | 1.4 mi |
| 52802 | Davenport | Iowa | 2.7 mi |
| 52803 | Davenport | Iowa | 3 mi |
| 52801 | Davenport | Iowa | 3.2 mi |
| 52807 | Davenport | Iowa | 3.9 mi |
| 52805 | Davenport | Iowa | 4 mi |
| 52808 | Davenport | Iowa | 4 mi |
| 52809 | Davenport | Iowa | 4 mi |
| 61299 | Rock Island | Illinois | 4.5 mi |
| 61201 | Rock Island | Illinois | 5.1 mi |
| 61266 | Moline | Illinois | 6.2 mi |