Union City
U.S. National Register of Historic Places
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Location	Madison County, Montana
Nearest city	Virginia City, Montana
Coordinates	45°12′30″N 111°56′33″W / 45.20833°N 111.94250°W / 45.20833; -111.94250
Built	1867
Architect	Griffith & Thompson
Architectural style	Mining mill
NRHP reference No.	99000261[1]
Added to NRHP	February 26, 1999

Union City is a ghost town in Madison County, Montana, United States. Its elevation is 7,582 feet (2,311 m), and it is located at 45°12′30″N 111°56′3″W / 45.20833°N 111.93417°W / 45.20833; -111.93417 (45.2082579, -111.9424776).^[2]

Founded in 1867^[1] as a mining camp, the community was abandoned after the claims ran out.^[2] The entire site, now owned by the Bureau of Land Management, was added to the National Register of Historic Places in 1999.^[1]