World largest cities - Urban footprint

FOREWORD : Comparing cities data is tricky! The representation use a 2011 United Nations dataset published on Wikipedia. This dataset is an aggregation of several data providers (national censuses, estimations, regional databases) who do use different methodologies regarding population count and defining their "urban agglomeration". You may find some more useful information on UN, Wikipedia websites, also on this academic article (pdf) by Forstall & al. In addition, urban agglomerations are far from being homogeneous entities. This dataviz has no other ambition than giving a big picture on urban agglomerations main chracteristics and footprint.

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Data representation : Population / All geographical zone