Land for sale in Blaine County, Montana, recently totaled almost $16 million and 9,000 acres. Blaine County ranks 33rd in Big Sky Country for the total acreage of land currently advertised for sale. Of all locations in Blaine County with ranches, farms, hunting land and other rural land and acreage for sale, Chinook featured the most land for sale. Its economy is defined as agricultural, with 546 farms recorded in the county during the most recent U.S. Census. Farming activities in Blaine County generate annual revenues of $6 million, most of which is from crops. Blaine County is one of the ten largest counties in Montana (4,238 square miles). It's located in the North Central Montana region of the state.