Decatur, Georgia GenWeb - Bainbridge -- County Seat The county was named for Stephen Decatur (17791820) of Maryland, an illustrious U.S.Navy commodore, who was killed in a duel by Commodore James Barron. The county seat is Bainbridge. Communities include: Amsterdam, Attapulgus, Bainbridge, Brinson, Climax, Eldorendo, Faceville, Fowlstown, Lynn, and Recovery. Decatur County neighbors are Baker Co.,