Atlanta, GA

ZIP code 31120 is a United States Postal Service PO Box ZIP associated with Atlanta, Georgia, rather than a standard residential ZIP with defined boundaries. Because it does not represent a distinct geographic area, landmarks cannot be reliably assigned as being within it. Atlanta’s well-known landmarks—including the Georgia Aquarium, Centennial Olympic Park, and Martin Luther King Jr. National Historical Park—are in the wider city, not necessarily ZIP 31120.