Australia and New Zealand

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In Australia, city in its broadest terms refers simply to any large enough town. Narrower usage can refer to a local government area, or colloquially to the central business district of a large urban area.[citation needed] For instance the City of South Perth[17] is a local government area within the wider urban area known as Perth, commonly called Australia's fourth largest city. Residents of Perth might speak of travelling to the CBD as "going to the city".
In New Zealand, according to Statistics New Zealand (the government statistics agency), "A city [...] must have a minimum population of 50,000, be predominantly urban in character, be a distinct entity and a major centre of activity within the region."[18]. For example Gisborne, purported to be the first city to see the sun, has a population of only 44,500 (2006) and is therefore administered by a district council, not a city council. At the other extreme, Auckland, although it is usually referred to as a single city, is actually four cities: Auckland City, Waitakere City, North Shore City, and Manukau City.