Postal code 21638 covers 1 verified locality record in United States with interactive boundary centroid map and administrative hierarchy.
Compare 21638 with adjacent postal codes in the same area or prefix range:
Postal code 21638 belongs to the 21 prefix district in United States.
Based on 1 records, 1 postal code values and 1 mapped localities. Coordinate coverage is 100.0%.
| Postal code | Locality | Administrative path | Coordinates |
|---|---|---|---|
| 21638 | Grasonville | Maryland / Queen Anne's | 38.9456, -76.1997 |
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/united-states/code/21638.
| Code | Place | Hierarchy | Coordinates |
|---|---|---|---|
| 21638 | Grasonville | Maryland / Queen Anne's | 38.9456, -76.1997 |
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.