Lemhi County is a county located in the state of Idaho. Based on the 2010 census, the population was 7,936. The county was created in 1869. The largest city and county seat is Salmon. Lemhi county is named after Fort Lemhi (or Limhi), a remote Mormon missionary settlement from 1855-1858 in Bannock and Shoshone territory.
Lemhi County is named for Fort Lemhi, a local mission and fort of the Church of Jesus Christ of Latter-Day Saints, which in turn was named for King Lemhi, a figure in the Book of Mormon.
County QuickFacts: CensusBureau Quick Facts
Established January 9, 1869 with its county seat at Salmon. Named for Fort Lemhi, the L.D.S. Salmon River Mission, which was named for King Lemhi in the book of Mormon. Lewis and Clark were the first white men in this area.
As reported by the Census Bureau, the county has a total area of 4,569 square miles (11,830 km2), of which 4,563 square miles (11,820 km2) is land and 5.4 square miles (14 km2) (0.1%) is water.
Lemhi county is located close to the center of Idaho. The county is the fourth-largest county in Idaho by area. The highest point is Bell Mountain at 11,612 ft (3,539 m) above sea level, and the lowest point is the Salmon River as it exits on the county's western border with Idaho County at approximately 3,000 feet (914 m). The river cuts through the center of Lemhi County before turning west. The county's eastern border with Beaverhead County, Montana, is the continental divide.
Bordering counties are as follows: