Treasure County, Montana

Treasure County, Montana
Location within the U.S. state of Montana
Coordinates: 46°12′N 107°16′W / 46.2°N 107.27°W / 46.2; -107.27
Country United States
State Montana
Founded1919
SeatHysham
Largest townHysham
Area
 • Total
984 sq mi (2,550 km2)
 • Land977 sq mi (2,530 km2)
 • Water6.6 sq mi (17 km2)  0.7%
Population
 (2020)
 • Total
762
 • Estimate 
(2024)
739
 • Density0.780/sq mi (0.301/km2)
Time zoneUTC−7 (Mountain)
 • Summer (DST)UTC−6 (MDT)
Congressional district2nd
  • Montana county number 33

Treasure County is a county in the U.S. state of Montana. As of the 2020 census, the population was 762, making it the second-least populous county in Montana. Its county seat is Hysham. The county was split off from Rosebud county in 1919 and named Treasure in hopes of drawing in new settlers.