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Transcribed by the Ottowa Genealogical Society.

From 1821 the census took place every 10 years. The census for 1821-1851 were destroyed in the explosion in the Public Records Office, Four Courts at the start of the Irish Civil War in 1922, those from 1861- 1891 were destroyed by Government Fiat.

1851IrishCensusReturnsCommaDelimitedTextFileJul24_07

1851IrishCensusReturnsCommaDelimitedTextFileJul24_07

The 1851 Census was taken on the night of 30 March 1851. The following information was requested: Name of street, avenue road, etc.; house number or name; whether or not the house was inhabited; name of each person that had spent the night in that household; relationship of person enumerated to the head of the family; each person’s marital status; age at last birthday (sex is indicated by which column the age is recorded in); each person’s occupation; person’s place of birth; whether deaf, dumb, blind, or lunatic.

Enumeration forms were distributed to all households a couple of days before census night and the complete forms were collected the next day. All responses were to reflect the individual’s status as of 30 March 1851 for all individuals who had spent the night in the house. People who were traveling or living abroad were enumerated at the location where they spent the night on census night. All of the details from the individual forms were later sorted and copied into enumerators’ books, which are the records available to the public today.