1 definition by SulleyMan
Stands for Gwinnett County, gco is a County outside the north eastern part of Atlanta where middle-upper class kids grew up. It's an infamously well known County in Georgia, especially to college aged kids, known for fine, rich girls and street, rich guys. Gco is also home to many Atlanta Falcons football players, Justin Beiber, T.I., and the Migos (also where the Migos grew up).
Omar: yo homie, where you from?
Me: gco
Omar: oh shiiit, you lucky ass. Every hoe I met from gco is stupid fine and bad af.
Me: gco
Omar: oh shiiit, you lucky ass. Every hoe I met from gco is stupid fine and bad af.
by SulleyMan October 18, 2017