Postal entity record
US 60428 Postal Code Data Source-backed
60428 postal code facts for Markham, US: region, coordinates, source, and nearby postal codes.
CountryUS
PlaceMarkham
RegionIL
Nearby rows12
Key metadata
| Place | Markham |
|---|---|
| Admin area | Illinois / IL |
| Local area | Will |
| Coordinates | 41.5998, -87.6906 |
| 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 60428 to Markham, 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 | Markham |
| postal_code | admin_area | Illinois |
| postal_code | centroid | 41.5998, -87.6906 |
Nearby postal codes
| Code | Place | Region | Distance |
|---|---|---|---|
| 60429 | Hazel Crest | Illinois | 1.8 mi |
| 60469 | Posen | Illinois | 1.9 mi |
| 60426 | Harvey | Illinois | 2.1 mi |
| 60472 | Robbins | Illinois | 3.1 mi |
| 60478 | Country Club Hills | Illinois | 3.1 mi |
| 60452 | Oak Forest | Illinois | 3.3 mi |
| 60430 | Homewood | Illinois | 3.4 mi |
| 60445 | Midlothian | Illinois | 3.4 mi |
| 60406 | Blue Island | Illinois | 4.1 mi |
| 60418 | Crestwood | Illinois | 4.1 mi |
| 60422 | Flossmoor | Illinois | 4.1 mi |
| 60827 | Riverdale | Illinois | 4.6 mi |