Cumberland County is a county located in the U.S. state of North Carolina. As of the 2020 census, the population was 334,728, making it the fifth-most populous county in North Carolina. Its county seat is Fayetteville. Cumberland County is part of the Fayetteville, NC Metropolitan Statistical Area.

Fayetteville is a city in and the county seat of Cumberland County, North Carolina, United States. It is best known as the home of Fort Liberty, a major U.S. Army installation northwest of the city.