Duplin County () is a county located in the U.S. state of North Carolina. As of the 2010 census, the population was 58,505. Its county seat is Kenansville.

Fayetteville () is a city in Cumberland County, North Carolina, United States. It is the county seat of Cumberland County, and is best known as the home of Fort Bragg, a major U.S. Army installation northwest of the city. Fayetteville has received the All-America City Award from the National Civic League three times. As of the 2010 census it had a population of 200,564, with an estimated population of 211,657 in 2019. It is the 6th-largest city in North Carolina. Fayetteville is in the Sandhills in the western part of the Coastal Plain region, on the Cape Fear River. With an estimated population in 2019 of 526,719 people, the Fayetteville metropolitan area is the largest in southeastern North Carolina, and the fifth-largest in the state. Suburban areas of metro Fayetteville include Fort Bragg, Hope Mills, Spring Lake, Raeford, Pope Field, Rockfish, Stedman, and Eastover. Fayetteville's mayor is Mitch Colvin, who is serving his second term.

Dunn is the largest city of Harnett County, North Carolina, United States. The population was 9,263 at the 2010 census, and an estimated 9,718 in 2018. It is the anchor city of the Dunn Micropolitan Area, population 114,678 (2010 census), which consists of Harnett County and is a part of the greater Raleigh–Durham–Cary Combined Statistical Area (CSA) as defined by the United States Census Bureau.

Johnston County is a county located in the U.S. state of North Carolina. As of the 2010 census, the population was 168,878. Its county seat is Smithfield.Johnston County is included in the Raleigh, NC Metropolitan Statistical Area, which is also included in the Raleigh-Durham-Chapel Hill, NC Combined Statistical Area, which has a population of 1,998,808 as of U.S. Census 2012 Population Estimates.