That’s like trying to add Staten Island and Long Island population to New York City population.
Only thing is Staten Island and Long Island usually vote red, the opposite of Manhattan, Brooklyn, Bronx etc.
It’s a bit different for Atlanta and the city is smaller geographically and less dense so the surrounding cities and counties truly extend out of the city, where the five boroughs are a true entity onto themselves - sad thing is since Grumman closed years ago Lawn Guyland doesn’t have much of an economy of its own other than the bloated local schools and governments that five figure property taxes bring with it.