Postal reference
ZIP 21010, Maryland
ZIP code 21010 is associated with Gunpowder in Maryland in the GeoNames postal reference.
Reference details
- State
- Maryland (MD)
- ZIP code
- 21010
- Associated localities
- Gunpowder
- County names in postal records
- Harford
- Approximate postal point
- 39.3982, -76.2743
View point on map ↗
Postal information is adapted from GeoNames, CC BY 4.0. Locality associations and coordinates are approximate, not ZIP boundaries or a guarantee of current mail delivery.