The overall value of farms, rural land, hunting land and other land for sale in Minnesota's Pennington County recently on Land.com was nearly $5 million. This represents around 2,000 acres of land and rural real estate for sale in Pennington County. Pennington County ranks 80th out of 87 counties in the state for the combined amount of land currently advertised for sale. Of all land for sale in Pennington County, Thief River Falls featured the most land for sale. Pennington County is Minnesota's 52nd largest county (618 square miles). It's located in the North Central West Minnesota region of the state.