Maxwell Grandisson III, one of the leading members of a Terranocentric movement, was a resident of the city, at least through the early 23rd century. (TOS novel: The Final Reflection) Other residents of Atlanta included members of the McCoy family, including Thomas Jackson "T.J." McCoy (The Final Reflection), David McCoy (Star Trek V: The Final Frontier) and Leonard McCoy (Star Trek: The Original Series).
While baseball had died out as a national sport in the United States of America -- as well as an international sport -- in 2042, there was an attempt to revive it in the middle of the 23rd century. One of the old team names brought back was that of the Atlanta Braves, which won their division in 2279. (Orion Press: Liberation from Hell, "Never Forget")