Tenochtitlan had between 200.000 and 400.000 inhabitants at the height of its culture.
There are many uncertainties on how much people lived in the city of Tenochtitlan, but most estimates indicate a population between 200.000 and 400.000 in the early 16th Century.
In accordance with a letter sent to the King of Spain, Spanish conquistador Hernan Cortes (1485 - 1547) stated that Tenochtitlan was as large as the Spanish city of Seville. The capital of the Aztec empire may rivalled with the most populated European cities (i.e. London, Paris).
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