1831 census of the Ottoman Empire was the first available population information in the West.
[1] The Europeans estimates before this census, some of whom, such as William Eton,[2] David Urquhart,[3] Georg Hassel[4] was based on their personal assumptions which in these publications claimed to be gathered from Ottoman court.
[a] The "first" modern Ottoman census was conducted beginning in 1828/29 in both Europe and Anatolia.
Advent of the war with Russia in 1828-1829 prevented generalization of these procedures.
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