Glynn County is located in the southeastern part of the U.S. state of Georgia. As of the 2020 census, the population was 84,499. The county seat is Brunswick. Glynn County is part of the Brunswick, Georgia Metropolitan Statistical Area.

Brunswick is a city in and the county seat of Glynn County in the U.S. state of Georgia. As the primary urban and economic center of the lower southeast portion of Georgia, it is the second-largest urban area on the Georgia coastline after Savannah and contains the Brunswick Old Town Historic District. At the 2020 U.S. census, the population of the city proper was 15,210; the Brunswick metropolitan area's population as of 2020 was 113,495.