Fulton County is a county located in the U.S. state of Georgia. As of the 2010 census, the population was 920,581, making it the most populous county in Georgia. However, Atlanta mayor Kasim Reed suspects significant undercounting in the City of Atlanta, which implies similar concerns for Fulton County as a whole – the 2009 estimate of the county's population was 1,020,014, 10.8% higher than the 2010 census results. The current 2013 estimate for the population of Fulton County is 984,293. Its county seat is Atlanta, the state capital since 1868. 90% of the City of Atlanta is within Fulton County (the other 10% lies within DeKalb County). Fulton County is the principal county of the Atlanta metropolitan area.
Fulton County is included in the Atlanta-Sandy Springs-Roswell, GA Metropolitan Statistical Area.
Fulton County was created from the western half of DeKalb County in 1853.
The city of Roswell has more pre-Civil War historical buildings than anywhere else in north Georgia.
Fulton County was named in honor of Hamilton Fulton, a surveyor for the Western and Atlantic Railroad; some had previously incorrectly claimed it was named for Robert Fulton, inventor of the steamboat.
At the beginning of 1932, as an austerity measure to save money during the Great Depression, Milton County to the north and Campbell County to the southwest became part of Fulton County. This gave the county its current long shape along of the Chattahoochee River. On May 9 of that year, neighboring Cobb County ceded to Fulton County the city of Roswell and lands lying east of Willeo Creek, in order that the latter county be more contiguous with the lands ceded from Milton County.
Note: annexed Campbell and Milton in 1932.