City · Maryland · United States
Deal Island, MD — ZIP codes
1 ZIP code · Somerset County
- City
- Deal Island
- County
- Somerset
- State
- Maryland
- Country
- United States
- Postal code
- 21821Single source
- Coordinates
- 38.1533, -75.9496 View on OpenStreetMap
- Area codes
- 667, 410
ZIP codes (1)
| Postal code | Place name | Verification |
|---|---|---|
| 21821 | Deal Island | Single source |
Sources and verification
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS). Last generated : 2026-08-21. Report an error.