Lemhi County, Idaho

Lemhi County is way out in east-central Idaho. It’s big, wild, and remote, with the Salmon and Lemhi Rivers cutting through the landscape. Lewis and Clark even passed through this area during their famous expedition.

Outdoor lovers feel right at home here. The Lemhi Range and Bitterroot Mountains dominate the scenery, while the Frank Church-River of No Return Wilderness covers a huge part of the county. It’s the largest contiguous wilderness area in the lower 48 states, so there’s plenty of room to get away from it all.

Mining used to be a major part of the local economy, but ranching and tourism are more important today. Hunting, fishing, hiking, and other outdoor activities draw visitors throughout the year. Salmon serves as the county seat and has plenty of history of its own. If you’re looking for a place where you can truly escape the crowds, Lemhi County fits the bill.

CategoryDetails
County NameLemhi County
County SeatSalmon
EtymologyNamed after Fort Lemhi
Cities, Towns, and CommunitiesSalmon, Leadore, North Fork, Lemhi, and more
Interstates and HighwaysU.S. Route 93, U.S. Route 28, Idaho State Highway 29
FIPS Code16-059
Total Area8,931 square miles (land: 8,894 sq mi; water: 37 sq mi)
Adjacent CountiesIdaho County (Northwest), Ravalli County, Montana (North), Beaverhead County, Montana (Northeast), Clark County (East), Butte County (South), Custer County (Southwest), Valley County (West)
Time ZoneMountain Time Zone
StateIdaho
Coordinates45.2° N, 113.6° W
Major LandmarksLemhi Pass, Salmon River, and the Frank Church-River of No Return Wilderness
Population8,800
Scroll to Top