Thirty most populous cities in the world

This a list of the thirty most populous cities in the world as of 2004.

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The reader should note that criteria for defining a city's population vary markedly between nations, and the figures and ranks in this list may bear little or no relation to a city's actual metropolitan or urban area population size. The List of metropolitan areas by population may be better suited to comparison between cities on a global scale.

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Note: This data may need updating.

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Hong Kong is a city statelet which has a population of over 7,500,000, however the territory does not define itself as a city.

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