[citation needed] As of the 2010 census, there were 6,073 people, 2,450 households, and 1,643 families residing in the county.

Those of Hispanic or Latino origin made up 1.3% of the population.

In terms of ancestry, 40.2% were German, 14.7% were Norwegian, 14.5% were Irish, 11.9% were English, 6.4% were Swedish, 6.0% were Dutch, and 4.3% were American.

Males had a median income of $34,824 versus $24,419 for females.

Teton County voters have not selected the Democratic Party candidate in a national election since 1964.