1901 United Kingdom census
The United Kingdom Census 1901 was the 11th nationwide census conducted in the United Kingdom of Great Britain and Ireland, and was done on 1 April 1901 "relating to the persons returned as living at midnight on Sunday, March 31st".
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The total population of the England and Wales, Scotland, and Ireland (including what is now the Republic of Ireland) was 41,458,721 of which 21,356,313 were female and 20,102,406 were male. The foreign-born population was recorded at 1.4%