Madison County, Montana

Madison County
Madison County Courthouse in Virginia City
Location within the U.S. state of Montana
Montana's location within the U.S.
Coordinates: 45°18′N 111°55′W / 45.3°N 111.92°W / 45.3; -111.92
Country United States
State Montana
Founded1865
Named afterJames Madison
SeatVirginia City
Largest townEnnis
Area
  Total
3,603 sq mi (9,330 km2)
  Land3,587 sq mi (9,290 km2)
  Water15 sq mi (40 km2)  0.4%
Population
 (2020)
  Total
8,623
  Estimate 
(2024)
9,753
  Density2.4/sq mi (0.92/km2)
Time zoneUTC−7 (Mountain)
  Summer (DST)UTC−6 (MDT)
Congressional district1st
Websitewww.madison.mt.gov
  • Montana county number 25

Madison County is a county in the U.S. state of Montana. As of the 2020 census, the population was 8,623. Its county seat is Virginia City. The county was founded in 1865; at the time it was part of the Montana Territory.