Of 56 counties in the Treasure State, Roosevelt County ranks 29th in terms of size (2,369 square miles). Roosevelt County is in Missouri River Country Montana. Montana's Roosevelt County has 1,000 acres of recreational land and property for sale based on recent Land Network data. The combined market value of farms, ranches, hunting land and other land for sale here was approximately $400,000. Browse all recreational property for sale in Roosevelt County to find the recreational tract that suits your lifestyle needs, from hunting and fishing properties for the outdoor enthusiast to undeveloped acreage ready for future residential-property development. The most common type of land for sale by combined acreage in Roosevelt County is house.