ZIP Code 21771
Mount Airy · Frederick, Maryland
21771 is the ZIP code of Mount Airy in Frederick, Maryland, United States.
- ZIP Code
- 21771
- County
- Frederick
- State
- Maryland
- Country
- United States
Place with ZIP code 21771
| Place | County | Location |
|---|---|---|
| Mount Airy | Frederick | 39.388, -77.172 |
Near Baltimore
The nearest major city is Baltimore, about 49 km away.
Nearby ZIP codes
Frequently asked questions
Which places use ZIP code 21771?
Mount Airy.
Which county and state is 21771 in?
Frederick, Maryland, United States.
What is the nearest major city to 21771?
Baltimore, about 49 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.