The township of St Leonards was laid out in 1836 in what is now North Sydney, bounded by what is now Miller, Walker, Lavender and Berry Streets.
A feature of these lines was the underground tram terminus at Wynyard railway station (the only one in Australia), and the tracks over the Sydney Harbour Bridge.
North Sydney has a number of heritage-listed sites, including those listed on the New South Wales State Heritage Register: The following buildings are heritage-listed on other heritage registers:[16] The commercial district of North Sydney includes the second largest concentration of office buildings in New South Wales, with a large representation from the advertising and information technology industries.
Corporations whose offices are in North Sydney include: AAMI, Acciona, AGL, CIMIC, Cisco Systems, Coca-Cola Europacific Partners, Gen Digital, Hyundai, Microsoft, Nando's, National Australia Bank, NBN Co, Nine Entertainment, Novell, SAP, Sophos, Ventia, UGL, Vocus Communications, Vodafone and Zurich Insurance.
The main shopping complex is the Greenwood Plaza, which is connected to North Sydney station.
Other languages spoken at home included Mandarin 6.4%, Cantonese 3.2%, Spanish 2.0%, Hindi 1.7% and Korean 1.5%.
Bus services by Busways, CDC NSW, Keolis Downer Northern Beaches, Transdev John Holland and Transit Systems operate through North Sydney, connecting train and bus services towards North Sydney's neighbouring suburbs as well as connecting train services to Richmond via City from the T1 North Shore & Northern Lines.
Victoria Cross railway station, located two blocks north of the existing North Sydney railway station, opened in late August 2024 as part of the Sydney Metro City & Southwest project.
St Aloysius' College of Milsons Point and Loreto Kirribilli are also within the confines of the North Sydney local government area.
St Leonards Park which includes North Sydney Oval is the suburb's major recreation area, popular among joggers and those wishing to walk their dogs.
North Sydney Ovals are notably cricket pitches during the summer and the home ground for the Northern Suburbs Rugby Union Club and the North Sydney Bears Rugby League Club during the winter.