A total of nearly 2,000 acres were listed for sale in Minnesota's Koochiching County recently, representing a combined approximately $19 million in Koochiching County land for sale. Koochiching County ranks 48th in the Land of 10,000 Lakes for the total acreage of land currently advertised for sale. International Falls featured the most land for sale. From an economic perspective, manufacturing and related services are the main sectors in Koochiching County. Koochiching County is one of the ten biggest counties in Minnesota (3,154 square miles). It's located in the Northeast Minnesota region of Minnesota.