Information on Ross Stores in Arnold, MD 21012 Outlet Note Regular Brands Ross Stores Maryland Arnold 1688043 Rating 4.6 based on 104 votes Address 1501 Ritchie Hwy Arnold, MD 21012 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. People Also Viewed