Of 53 counties in the Sioux State, Grand Forks County is 18th in terms of its size (1,439 square miles). Grand Forks County is in Northeast North Dakota. Grand Forks County, North Dakota, has about 1,000 acres of commercial 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 almost $1 million. Browse all Grand Forks County commercial land and property for sale on the Land Network to find your next commercial property or land investment. The most common type of land for sale by combined acreage in Grand Forks County is farms.