The only person I saw without a mask in Atlanta was a police officer. Even (what looked like) a drug dealer was wearing a mask. Though I guess that might be helpful in that career. In my part of the state, about half the white people wear masks. Maybe 2/3 of African Americans. At least anecdotally, both numbers have been falling.
Kemp said that data was presented to him. Not sure if there's a public survey. He could also be lying, but that would be a weird thing to lie about. Unlike Trump, he's strategic with his lies.