Fulton was created in 1853 from the western half of DeKalb and named for the steamboat pioneer Robert Fulton, and it has been the state's population center ever since. The county runs from the Chattahoochee River on the northwest, which separates it from Cobb County, south past the airport and beyond, and it holds most of the City of Atlanta plus the north Fulton cities of Alpharetta, Roswell, Sandy Springs, Johns Creek and Milton.
For buyers the county is really three markets in one. Central Atlanta carries downtown, Midtown and Buckhead, the metro's densest and most expensive ground. North Fulton follows the GA 400 corridor with its tech districts, established suburbs and family inventory. South Fulton holds the airport, the logistics corridors and the county's remaining land. One more fact sits on top of all of it: the City of Atlanta reaches about twelve square miles into DeKalb County, so for any single home the address decides the county, the school district and the verified record of closed sales.