City · Maryland · United States
Arnold, MD — ZIP codes
1 ZIP code · Anne Arundel County
- City
- Arnold
- County
- Anne Arundel
- State
- Maryland
- Country
- United States
- Postal code
- 21012Single source
- Coordinates
- 39.0476, -76.4941 View on OpenStreetMap
ZIP codes (1)
| Postal code | Place name | Verification |
|---|---|---|
| 21012 | Arnold | 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. Last generated : 2026-08-21. Report an error.