North Ryde is a suburb of Sydney, in the state of New South Wales, Australia. North Ryde is located 15 kilometres north-west of the Sydney central business district, in the local government area of the City of Ryde. North Ryde is on the Lower North Shore region. North Ryde is one of Australia's major business districts and is home to many corporate headquarters. Ryde, East Ryde and West Ryde are separate suburbs. North Ryde shares the postcode of 2113 with adjacent suburbs Macquarie Park and East Ryde. These suburbs were once part of North Ryde and many businesses and residences in these suburbs still advertise their address as being in North Ryde. Adjacent Macquarie University was issued with its own postcode by Australia Post 2109, in the late 1980s.