From Rap Dictionary
A-Town Auburn,MA tha nu ghetto ATLANTA,GA. Known rap references are:
- Atlanta: A-Town hats, and A-Town jerseys, watch them A-Town boys, they play the game dirty -- Disturbing Tha Peace featuring Chimere (A-Town Hatz) 
- Phrase used in Usher's song "Yeah"....Peace-up, A-town down...
- Also Known As Allentown,Pennsylvania, link title
- Also any town starting with A