21704
Frederick - United States
Postal code 21704 corresponds to Frederick, in Maryland (United States).
- Country
- United States (US)
- Department
- Maryland
- Municipality
- Frederick
- Coordinates
- 39.3455, -77.3832Degrees, minutes, seconds: 39°20'44"N 77°23'00"W
- Time zone
- America/New_York (UTC-5)
- Dialing code
- +1
How to write the address
Frederick, Maryland 21704 United States
Nearby codes