Dunn is the most populous city of Harnett County, North Carolina, United States. The population was 9,263 at the 2010 census. It is, along with Harnett County, part of the Anderson Creek, NC Micropolitan Statistical Area, which is also included in the Raleigh-Durham-Cary, NC Combined Statistical Area.

Harnett County is a county located in the U.S. state of North Carolina. As of the 2020 census, the population was 133,568. Its county seat is Lillington; its largest community is Anderson Creek. Harnett County is part of the Anderson Creek, NC Micropolitan Statistical Area.