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Teton County is a county located in the state of Wyoming. Based on the 2010 census, the population was 21,294. Its county seat is
Jackson. It is east from the Idaho state line.
Teton County is part of the Jackson, WY-ID Micropolitan Statistical Area.
Named for the Teton Mountains. Indians called them Tee-win-ot, three pinnacles. French trappers applied the name "Les Trois Tetons".
County QuickFacts: CensusBureau Quick Facts
Teton County was created February 15, 1921 with land from Lincoln County and organized the following year. The county was named for the Teton Range. The county was created because the inhabitants lived too far away from Kemmerer, the county seat of Lincoln County. The creation of the county required a special act of the Wyoming Legislature, because the area was too poor and had too few people to qualify for county status under the normal requirements.
Teton County, Wyoming is one of the few counties in the United States to border its namesake in another state--in this case, Teton County, Idaho.
As reported by the Census Bureau, the county has a total area of 4,222 square miles (10,934 km2), of which,
4,008 square miles (10,380 km2) of it is land and 214 square miles (554 km2) of it (5.07%) is water.
Bordering counties are as follows: