The Savannah metropolitan area is centered on the principal city of Savannah, Georgia. The official name given by the U.S. Office of Management and Budget (OMB) is the Savannah, GA Metropolitan Statistical Area, which is used for statistical purposes by the United States Census Bureau and other entities. The OMB defines this area as consisting of Bryan, Chatham, and Effingham counties in Georgia; its total population was 404,798 in the official 2020 U.S. Census, compared to 347,611 in the 2010 census (an increase of 16.45%). Savannah is the third most populous of fourteen Georgia metropolitan areas (ranked after Atlanta and Augusta). It was the fastest-growing metro area in the state for the period 2010–2020 (followed by Atlanta, Gainesville, and Warner Robins).