Formed January 13, 1913 (32nd county)
Big Horn County (13,127), Hardin (3,819)
The rose brick courthouse, on the square at 3rd, Custer, 4th, and Crow streets, was built in 1937. Interstate Highway 90 Business passes three blocks east of the site. J. G. Link is the Art Deco building architect. The structure was enlarged in 1979. An earlier courthouse existed in Hardin, the only county seat. Big Horn County was established on January 13, 1913 as the 32nd county. The county is named for the big horn sheep. The county seat is named for Samuel Hardin, friend of the city’s developer.
Big Horn County government consists of a sheriff and 3 Commissioners. One District Court Judge serves Big Horn, Carbon, and Stillwater counties. Big Horn County is on the southern border with Wyoming. Billings, Montana is directly north of the county. The county center is 23.4 miles South-Southeast of Hardin nearer Garryowen. The county is surrounded clockwise by Treasure, Rosebud, and Powder River counties and Wyoming and Carbon and Yellowstone counties.
The area of the county is 4995 square miles. It is 5 out of 56 in the state. It ranks 14 out of 56 in population in the state. It has a density of 2.6 persons per square mile making it 29 out of 56 in the state. Big Horn County has 32.4% of its population in its incorporated areas. Interstate Highway 90 enters the county from the northwest, Yellowstone County, and exits to the south, Wyoming. United States Highway 87 is joined with Interstate Highway 90 from Yellowstone County to Wyoming. United States Highway 212 comes from the east, Rosebud County, and joins Interstate Highway 90 into Yellowstone County, west. Big Horn County has the appearance of a military tank. Hardin is in the northwest quarter of the county. Hardin is the county seat and the largest city. It is 29.1% of the county population.
Hardin
Lodge Grass
