Warrendale is a northern suburb of Pittsburgh, Pennsylvania, United States. It is located in the northwestern corner of Allegheny County. It is the home to the corporate headquarters of Joy Mining Machinery, Printing Industries of America and SAE International, as well as the United States Postal Service Pittsburgh Network Distribution Center, one of 21 such mail delivery hubs in the country. Originally founded as Brush Creek, it was renamed to Warrendale in 1907, after the local Warren family that originally resided there in the late 1700s.