What County Is 21791 In?

ZIP 21791 is located in

Frederick County

Unionville, Maryland (MD)

39.53°N, 77.19°W · FIPS 24021

Frederick County — ZIP 21791

ZIP 21791 highlighted in Frederick County, Maryland. Click neighboring ZIPs to explore.

ZIP Code Details

ZIP Code21791
CountyFrederick County
CityUnionville
StateMaryland (MD)
FIPS Code24021

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Nearby ZIP Codes

21788 Graceham, MD Frederick County 21790 Tuscarora, MD Frederick County 21792 , MD Frederick County 21793 Walkersville, MD Frederick County 21794 West Friendship, MD Howard County

Frequently Asked Questions

What county is ZIP code 21791 in?

ZIP code 21791 is located in Frederick County, Maryland (MD).

What city is ZIP code 21791 in?

ZIP code 21791 is primarily associated with Unionville, Maryland.

What state is ZIP code 21791 in?

ZIP code 21791 is in the state of Maryland (MD).