21771 postal code
United StatesUpdated 2026-11-09Mount Airy, MarylandFrederick5 digits
Postal code details
1 placeCode
21771
Place
Mount Airy
Region
Maryland
County
Frederick
Coordinates
39.3881, -77.1723
Accuracy
1 / 6
Country
United States
Location
OpenStreetMap ↗
39.3881, -77.1723© OpenStreetMap
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Places under this code
1| Place | Region | County | Coordinates |
|---|---|---|---|
| Mount Airy | Maryland | Frederick | 39.3881, -77.1723 |
Same code in other countries
2| Country | Place | Region |
|---|---|---|
| PE Peru | Santa Lucia | Puno |
| SE Sweden | Malmö | Skåne |
FAQ
Which city is 21771 in?
Mount Airy, Maryland, United States.
What are the coordinates of 21771?
39.3881, -77.1723
Is 21771 used in other countries?
Yes, 2 other countries.
Updated 2026-11-09. Attribution in Data & license.