21770 postal code
United StatesUpdated 2026-11-09Monrovia, MarylandFrederick5 digits
Postal code details
1 placeCode
21770
Place
Monrovia
Region
Maryland
County
Frederick
Coordinates
39.3512, -77.2494
Accuracy
4 / 6
Country
United States
Location
OpenStreetMap ↗
39.3512, -77.2494© OpenStreetMap
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Places under this code
1| Place | Region | County | Coordinates |
|---|---|---|---|
| Monrovia | Maryland | Frederick | 39.3512, -77.2494 |
Same code in other countries
3| Country | Place | Region |
|---|---|---|
| DE Germany | Mittelstenahe | Lower Saxony |
| FI Finland | Mossala | Southwest Finland |
| PE Peru | Acunuyo | Puno |
FAQ
Which city is 21770 in?
Monrovia, Maryland, United States.
What are the coordinates of 21770?
39.3512, -77.2494
Is 21770 used in other countries?
Yes, 3 other countries.
Updated 2026-11-09. Attribution in Data & license.