The value of all farms, ranches, hunting land and other land for sale in Montana's Stillwater County recently was nearly $97 million, representing a combined 6,316 acres of land for sale in Stillwater County. Stillwater County ranks 17th out of 56 counties in the Treasure State for the total acreage of land currently advertised for sale. Of all farms, ranches, hunting land and other land for sale in Stillwater County, Columbus had the most land for sale. Economically speaking, Stillwater County's is largely dependent on mining and mineral extraction-related businesses and services. Stillwater County is Montana's 38th biggest county (1,805 square miles). It's located in the Yellowstone Country Montana region of the state.