Lemhi County

Lemhi County is an administrative division in eastern Idaho covering mountainous terrain crossed by the Salmon River. The landscape shifts from river valleys to steep ridges, creating a rugged terrain that defines the character of this region.

The region entered American exploration history when the Lewis and Clark Expedition crossed Lemhi Pass in 1805. This passage marked a turning point in the discovery and mapping of western territories.

Local rodeos and the county fair reflect how ranching and farming remain woven into daily life and community gatherings. These events show how people here celebrate their connection to the land and livestock.

This is a sprawling mountain region, so allow extra time for travel and prepare for changing weather conditions. The warmer months offer the easiest access to higher elevations and remote areas.

The Frank Church-River of No Return Wilderness offers visitors access to vast undeveloped forest and mountain areas that remain largely untouched. This protected area stands as one of the largest continuous wilderness zones in the lower United States.

GPS coordinates: 44.93219,-113.85300

Latest update: December 7, 2025 20:23