Hours Of Operations Comcast Service Center Illinois Quincy Comcast Service Center Hours of Operation and Locations in Quincy, IL 4.5 - 19 votes 1 Locations in Quincy www.customer.xfinity.com Comcast Service Center Hours Category: Electronics Comcast Service Center - Quincy, IL 62301 2930 State St(800) 934-6489 View Store Details Explore QuincyView More Apparel Sam's ClubTJ MaxxKmartBig LotsCato Sports VansSnap FitnessCross CountryFinish LineSport Center Jewelry Sam's ClubHobby LobbyCatoZalesKohl's Outlet Recommend For You Xfinity Store R & R Solutions Studio Xfinity Dm Computers Clear Internet Harmony Computer Solutions Ribbons Express Incorporated Fdm Group Incorporated Ventures Unlimited Incorporated Concerto Networks