There was a combined $11 million of land and rural real estate for sale in McCone County recently on Land.com. The total acreage of all McCone County land for sale was almost 10,000 acres. McCone County ranks 46th in the Treasure State for the total number of acres of land currently advertised for sale. Circle had the most land for sale. Agriculture and farming drives the McCone County economy, with 489 farms recorded in the county during the U.S. Census in 2012. Farming activities in McCone County generate annual revenues of $9 million, most of which is from crops. McCone County is Montana's 22nd biggest county (2,682 square miles). It's located in the Missouri River Country Montana region of the state.