Formed February 15, 1921 (23rd county)
Teton County (23,323), Jackson (10,755)
The Modern stone and concrete courthouse was built in 1968. It is located Simpson Avenue between King and Willow streets. United States Highway 26 is three blocks northwest of the location. Kellogg & Kellogg designed the courthouse. The building was remodeled in 1995. A metal roof tops the courthouse. A County Administration Building was added in 1996. There was a 1930 courthouse prior to the current one also in Jackson the only county seat. The county was organized on February 15, 1921 from Lincoln County as the 23rd and final county. Teton County is named for the mountains. The county seat is named for Jackson Hole. Teton County is the birthplace of 3 Wyoming Governors, Milward L. Simpson, Clifford P. Hansen, and Matthew H. Mead.
Teton County government consists of a sheriff and 3 Commissioners. Three District Court Judges and Four Circuit Court Judges serve Teton, Fremont, and Sublette counties. Teton County is located on the northwest border with Idaho. Casper, Wyoming is southeast and Billings, Montana is northeast of the county. The county center is 19.5 miles North-Northeast of Jackson nearer Moose. The county is surrounded clockwise by Park, Fremont, Sublette, and Lincoln counties and Idaho and Montana.
The area of the county is 4008 square miles. It is 12 out of 23 in the state. It ranks 9 out of 23 in population in the state. It has a density of 5.8 persons per square mile making it 7 out of 23 in the state. Teton County has 46.1% of its population in its incorporated areas. United States Highway 20 comes from Park County, east, and goes to Idaho, west. United States Highway 26 enters from the east, Fremont County, and exits to the southwest, Idaho. United States Highway 89 goes north to south in the county from Park County to Lincoln County. United States Highway 191 is joined with United States Highway 20 from Idaho, splits and joins United States Highway 26 into Lincoln County. United States Highway 287 is joined with United States Highway 20 from Idaho, northwest, splits and joins United States Highway 26 into Fremont County. The county shape resembles a capital letter D. Jackson is located in the southwest quarter of the county. Jackson is the county seat and, as the only incorporated city, it is the largest city. It is 46.1% of the county population. The county is pronounced TEE-TON. This county is in the Jackson Micropolitan Statistical Area.
Jackson
