21778
Rocky Ridge, Frederick - United States
Postal code 21778 corresponds to Rocky Ridge, Frederick, in Maryland (United States).
- Country
- United States (US)
- Department
- Maryland
- Municipality
- Frederick
- Coordinates
- 39.6057, -77.3296Degrees, minutes, seconds: 39°36'21"N 77°19'47"W
- Time zone
- America/New_York (UTC-5)
- Dialing code
- +1
How to write the address
Rocky Ridge, Maryland 21778 United States
Nearby codes