page_title: Fulton County, Georgia
section_title: Geography
hierarchical_section_title: Fulton County, Georgia / Geography
caption_attribution_description: English: Garrett Lake in Mountain Park
context_page_description: Fulton County is a county in the north-central portion of the U.S. state of Georgia. As of 2019 estimates, the population was 1,063,937, making it the state's most-populous county and its only one with over 1 million inhabitants. Its county seat is Atlanta, the state capital. Approximately 90% of the City of Atlanta is within Fulton County; the other 10% lies within DeKalb County.
  Fulton County is part of the Atlanta-Sandy Springs-Roswell, GA Metropolitan Statistical Area.
context_section_description: According to the U.S. Census Bureau, the county has a total area of 534 square miles (1,380 km²), of which 527 square miles (1,360 km²) is land and 7.7 square miles (20 km²) (1.4%) is water. The county is located in the Piedmont region of the state in the foothills of the Blue Ridge Mountains to the north. The shape of the county resembles a sword with its handle at the northeastern part, and the tip at the southwestern portion.
  Going from north to south, the northernmost portion of Fulton County, encompassing Milton and northern Alpharetta, is located in the Etowah River sub-basin of the ACT River Basin (Coosa-Tallapoosa River Basin). The rest of north and central Fulton, to downtown Atlanta, is located in the Upper Chattahoochee River sub-basin of the ACF River Basin (Apalachicola-Chattahoochee-Flint River Basin). The bulk of south Fulton County, from Atlanta to Palmetto, is located in the Middle Chattahoochee River-Lake Harding sub-basin of the larger ACF River Basin, with just the eastern edges of south Fulton, from Palmetto northeast through Union Hill to Hapeville, in the Upper Flint River sub-basin of the same larger ACF River Basin.
caption: Garrett Lake, Mountain Park
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