The value of all ranches, farms, hunting land and other rural land and acreage for sale in Montana's Big Horn County recently was around $101 million, representing a total of 51,590 acres of land for sale in Big Horn County. Big Horn County ranks 30th based on the total amount of acres of land for sale of all the counties in the Treasure State. Of all locations in Big Horn County with farms and ranches for sale, Hardin had the most land for sale. Economically speaking, Big Horn County's is largely dependent on mining and mineral extraction-related businesses and services. Big Horn County is one of the ten biggest counties in Montana (5,016 square miles). It's located in the Southeast Montana region of Montana.