The combined value of farms and ranches for sale in Granite County, Montana, recently on Land.com was $63 million. This represents nearly 10,000 acres of farms, ranches, hunting land and other land for sale in Granite County. Granite County ranks 16th in the Treasure State for the combined amount of land currently advertised for sale. Drummond had the most land for sale. Based on its natural assets, tourism and recreation are important contributors to the Granite County economy. Granite County is the 40th largest county (1,732 square miles) in Montana. It's located in the Gold West Country Montana region of the state.