Oak Island is a seaside town located in the southeastern corner of North Carolina, United States. Part of Brunswick County, the major portion of the town is on Oak Island which it shares with Caswell Beach. Founded in 1999 as the result of the consolidation of two existing towns, Oak Island's main industry is tourism. Per the 2020 census, the town has a permanent population of 8,396 while its summer population is near 50,000. It along with the town of Caswell Beach is part of the Wilmington, NC, Metropolitan Statistical Area.

Brunswick County is a county located in the U.S. state of North Carolina. It is the southernmost county in the state. As of the 2020 census, the population was 136,693. Its population was only 73,143 in 2000, making it one of the fastest-growing counties in the state. With a nominal growth rate of approximately 47% in ten years, much of the growth is centered in the eastern section of the county in the suburbs of Wilmington such as Leland, Belville and Southport. The county seat is Bolivia, which at a population of around 150 people is among the least populous county seats in the state.