Postal code 28504 covers 1 verified locality record in Korea (South) with interactive boundary centroid map and administrative hierarchy.
Compare 28504 with adjacent postal codes in the same area or prefix range:
Postal code 28504 belongs to the 28 prefix district in Korea (South).
Based on 1 records, 1 postal code values and 1 mapped localities. Coordinate coverage is 100.0%.
Use this page to validate one postal code or locality against real parent areas, nearby records and downloadable source rows. The canonical route for this record set is /postal-codes/korea-south/code/28504.
| Code | Place | Hierarchy | Coordinates |
|---|---|---|---|
| 28504 | 청주시 청원구 | 충청북도 / 청주시 청원구 | 36.6505, 127.4924 |
Validate the postal identifier together with country, locality and administrative hierarchy fields, not as a standalone global pattern.
The page includes the parent country, related prefix or nearby codes, coordinates when available and source rows for download/API workflows.