Zetland is an inner southern suburb of Sydney, New South Wales, Australia 4 kilometres south of the Sydney central business district, in the local government area of the City of Sydney. The postcode is 2017. Zetland is part of the Green Square Town Centre district which is an affluent area due to its close proximity to Commonwealth Bank's campus-style headquarters, as well as other high-income employers in the financial services, software, and technology industries.