There was a total of around $5 million of land and rural real estate for sale in Pennington County recently on Land.com. The total size of all Pennington County farms, hunting land and other rural land and acreage for sale was approximately 2,000 acres. Pennington County ranks 81st out of 87 counties in the state for the total number of acres of land currently advertised for sale. Among cities in Pennington County with land for sale, Thief River Falls featured the most land for sale. Pennington County is Minnesota's 52nd biggest county (618 square miles). It's located in the North Central West Minnesota region of the state.