Cobb, county (345 sq mi/894 sq km; 1990 pop. 447,745), NW central Ga.; Marietta; 33°56'N 84°35'W. Bounded SE by Chattahoochee R.; includes part of Allatoona Reservoir in NW. Major suburban county in Atlanta region. Significant white-collar employment. Home of Lockheed-Ga. aircraft mfg. facility. Contains Kennesaw Mt. Natl. Battlefield Park and Marietta Natl. Military Cemetery. Formed 1832.
Capital city or county seat is shown by the symbol