Postal reference
ZIP 21139, Maryland
ZIP code 21139 is associated with Riderwood in Maryland in the GeoNames postal reference.
Reference details
- State
- Maryland (MD)
- ZIP code
- 21139
- Associated localities
- Riderwood
- County names in postal records
- Baltimore
- Approximate postal point
- 39.4093, -76.6486
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.