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Census of Down
Full government censuses
were taken of the whole island in 1821, 1831, 1841, 1851, 1861, 1871,
1881, 1891 1901, and 1911. The first four, for 1821, 1831, 1841, and
1851, were largely destroyed in 1922, in the fire at the Public Record
Office; surviving fragments are detailed under the
county source-lists. Those for 1861, 1871, 1881, and 1891 were
completely destroyed earlier, by order of the government. This
means that the earliest surviving comprehensive returns are for
1901 and 1911 and the original returns can be consulted in the
National Archives of Ireland.
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