There was a total of nearly $32 million of land and rural real estate for sale in Lemhi County recently on Land.com. The total of all Lemhi County ranches, farms, hunting land and other rural land and acreage for sale was 2,000 acres. Lemhi County ranks 35th out of 44 counties in the Gem State for the total acreage of land currently advertised for sale. Salmon had 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 biggest counties in Idaho (4,569 square miles). It's located in the Central Idaho region of the state.