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U.S. ZIP Code 21792
5-digit United States postal code #21792, Unionville, MD
ZIP: 21792
County: Frederick
Place Name: Unionville
State: Maryland
State Abbreviation: MD
Coordinates: 39° 28' 12" N, 77° 23' 31.56" W
Latitude: 39.470000000000
Longitude: -77.392100000000