Jackson is a town in the Jackson Hole valley of Teton County, Wyoming, United States. The population was 9,577 at the 2010 census, up from 8,647 in 2000. It is the county seat of Teton County and is its largest town. Jackson is the principal town of the Jackson, WY-ID Micropolitan Statistical Area, which includes Teton County in Wyoming and Teton County in Idaho. The town is often erroneously referred to as "Jackson Hole", the valley in which it is located.