Land for sale in Idaho's Gem County recently totaled nearly $171 million and around 4,000 acres. Gem County ranks 18th out of 44 counties in Idaho for the total acreage of land currently advertised for sale. There were two properties listed as sold in Gem County through the Land Network Comparable Sales Program. This represented a total value of $3,020,000. Among cities in Gem County with farms, ranches, and rural real estate for sale, Emmett featured the most land for sale. Gem County is Idaho's 40th largest county (564 square miles). It's located in the Southwestern Idaho region of the state.