East Cobb is an unincorporated community in Cobb County, Georgia, United States, with a population of 164,055 people. It is an affluent northern suburb of Atlanta.

Cobb County is a county in the U.S. state of Georgia, located in the Atlanta metropolitan area in the north central portion of the state. As of 2020 Census, the population was 766,149. It is the state's third most populous county, after Fulton and Gwinnett counties. Its county seat is Marietta; its largest city is Mableton.