Go back to directory. Add to Address Book. Attilio’s Pizza Attilio’s Pizza Address: 338 Riverside Drive Clayton NY 13624 work Phone: 315-686-2020work Website: http://www.attiliospizza.net Biography Attilio’s is located directly on the St. Lawrence River in downtown Clayton. Featuring deck dining on the “Very Best Pizza” in the 1000 islands area. Serving daily, along with Salads and our famous Broasted Chicken!