Of 100 counties in the Tar Heel State, Harnett County is 27th in terms of its size (601 square miles). Harnett County is in Piedmont North Carolina. Recent Land Network data records roughly 1,000 acres of ranches for sale in North Carolina's Harnett County, which is valued at a combined $2 million. Browse all Harnett County ranches for sale on the Land Network to find the ranch that's right for your business or commercial needs, from the sprawling legacy ranch to unbelievable residential ranch for your second home, investment property or retirement nest egg. The most common type of land for sale by combined acreage in Harnett County is residential property.