Prairie County is a county in the U.S. state of Montana. As of the 2020 census, the population was 1,088, making it the fifth-least populous county in Montana. Its county seat is Terry. Prairie County was created by the Montana Legislature in 1915 out of parts of Custer, Dawson, and Fallon Counties. The name was selected in a contest and reflects the predominant landscape of the region.
prairie county is a county in the us state of montana as of the 2020 census the population was 1088 making it the fifth-least populous county in montana its county seat is terry prairie county was created by the montana legislature in 1915 out of parts of custer dawson and fallon counties the name was selected in a contest and reflects the predominant landscape of the region