The U.S. Office of Management and Budget, Census Bureau and other entities define Brunswick's metropolitan statistical area as comprising Glynn, Brantley, and McIntosh counties, including the cities of Brunswick and Darien.

[2] Comprising Brantley, Glynn, and McIntosh counties, the Brunswick metropolitan area is located along the Lower Coastal Plain.

According to the U.S. Census Bureau, the MSA has a total area of 1,300 square miles (3,400 km2); if it were a U.S. state or territory, the Brunswick metropolitan area would be larger than the U.S. Virgin Islands, but smaller than Rhode Island.

At the 2000 United States census,[3] there were 93,044 people, 36,846 households, and 25,557 families residing within the MSA.

An estimated 12.9% of the metropolitan region's population lived at or below the poverty line.