Emmett is a city in Gem County, Idaho, United States. The population was 5,490 at the 2000 census; it was estimated to have risen to 6,341 by 2007. It is the county seat and the only city in the county.
Emmett is part of the Boise City–Nampa, Idaho Metropolitan Statistical Area.
Rising some 5,906 feet, Squaw Butte, named by native Americans who used this area as their winter resort, stands at the north end of the valley. The Payette River was named after Francois Payette, who was put in charge of Fort Boise in 1818 and traveled through the area. Permanent settlement began in the early 1860s, after gold discoveries in the Boise Basin brought people over the established stage and pack train routes. Two of these trails joined at the Payette River north of the present river bridge in Emmett.