The value of all ranches, farms, hunting land and other rural land and acreage for sale in Lemhi County recently was around $100 million, representing a combined 4,501 acres of land for sale in Lemhi County. Lemhi County ranks 26th out of 44 counties in the Gem State for the total number of acres of land currently advertised for sale. Salmon featured the most land for sale. From an economic perspective, government and state-level services contribute most to Lemhi County's overall GDP. Lemhi County is one of the ten largest counties in Idaho (4,569 square miles). It's located in the Central Idaho region of Idaho.