[1] The county seat is Driggs,[2] and the largest city is Victor.

The county was established in 1915 and was named after the Teton Mountains to the east.

[3] Teton County is part of the Jackson, WY-ID Micropolitan Statistical Area.

The Teton Valley was discovered by exploret John Colter in 1808, a member of the Lewis and Clark Expedition (1804–06).

As of the census[11] of 2000, there were 5,999 people, 2,078 households, and 1,464 families living in the county.

21.30% of all households were made up of individuals, and 5.30% had someone living alone who was 65 years of age or older.

As of the 2010 United States census, there were 10,170 people, 3,651 households, and 2,509 families living in the county.

Other elected officials include clerk, treasurer, sheriff, assessor, coroner, and prosecutor.

In 2008, it was one of three Idaho counties to favor Barack Obama,[17] despite giving George W. Bush a 23-point victory only four years earlier.

[a] At the state level, Teton County is in District 32 of the Idaho Legislature.

[19] As neighboring counties are still strongly Republican, the district is not competitive.