Unionville, Frederick County, Maryland

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Unionville, Maryland
Unincorporated community
Richard S. Foster 43.jpg
Unionville is located in Maryland
Location in Maryland
Coordinates: 39°28′29″N 77°11′08″W / 39.47472°N 77.18556°W / 39.47472; -77.18556Coordinates: 39°28′29″N 77°11′08″W / 39.47472°N 77.18556°W / 39.47472; -77.18556
Country United States
State Maryland
County Frederick

Unionville is an unincorporated community in Frederick County, Maryland, United States.[1] It is located approximately halfway between Frederick and Westminster, just east of Libertytown off Maryland Route 26 (Liberty Road). The Pearre-Metcalfe House was listed on the National Register of Historic Places in 1979.[2]

Unionville holds the world record for most rainfall recorded in one minute. On July 4, 1956 1.23 inches of rain fell in one minute. [3]


  1. ^ "Geographic Names Information System". Unionville (Populated Place). U.S. Geological Survey. 2009-01-29. 
  2. ^ National Park Service (2008-04-15). "National Register Information System". National Register of Historic Places. National Park Service. 
  3. ^ "America's Heaviest Rainfall Records". The Weather Channel. Retrieved 2017-08-27.