The combined value of land and rural real estate for sale in Custer County, Idaho, recently on Land.com was almost $96 million. This represents nearly 4,000 acres of ranches, farms, hunting land and other rural land and acreage for sale in Custer County. Custer County ranks 38th out of 44 counties in the Gem State for the combined amount of land currently advertised for sale. Among cities in Custer County with farms, ranches, hunting land and other land for sale, Stanley had the most land for sale. Economically speaking, Custer County's is largely dependent on mining and mineral extraction-related businesses and services. Custer County is one of the ten biggest counties in Idaho (4,938 square miles). It's located in the Central Idaho region of Idaho.