ZIP Code 21704
Frederick · Frederick, Maryland
21704 is the ZIP code of Frederick in Frederick, Maryland, United States.
- ZIP Code
- 21704
- County
- Frederick
- State
- Maryland
- Country
- United States
Place with ZIP code 21704
| Place | County | Location |
|---|---|---|
| Frederick | Frederick | 39.346, -77.383 |
Near Washington
The nearest major city is Washington, about 58 km away.
Nearby ZIP codes
Frequently asked questions
Which places use ZIP code 21704?
Frederick.
Which county and state is 21704 in?
Frederick, Maryland, United States.
What is the nearest major city to 21704?
Washington, about 58 km away.
Source: GeoNames postal codes (CC BY 4.0), geonames.org, retrieved 2026-10-22. Place coordinates are approximate. Check with the national postal service before sending anything valuable.