Information on GNC in Massillon, OH 44646 Outlet Note Regular Brands GNC Ohio Massillon 328187 Rating 4.7 based on 97 votes Address 2110 Wales Avenue Northeast Massillon, OH 44646 Phone Hours may vary in different stores. For accurate hours, please contact each store directly. Suite643 Hours may vary in different stores. For accurate hours, please contact each store directly. Nearby GNC Outlet GNC Outlet - Akron GNC Outlet - Akron GNC Outlet - Akron GNC Outlet - Barberton People Also Viewed