Thanks again to Dick Eastman for this blurb:
“A further five counties have been added to the National Archives of Ireland's 1911 census website. Returns for Cork, Donegal, Wexford, King's County, and Galway can now be searched online. Antrim, Down, Dublin and Kerry were released last year.
“The 1901 and 1911 censuses are the only surviving full censuses of Ireland open to the public. Both censuses cover the entire island of Ireland. The 1911 census was taken on 2 April 1911.
“Ireland's census records are unusual in that the original household manuscript returns survive. These are the forms filled out and signed by the head of each household on census night. Most other countries only have enumerators' books, where family details were transcribed by the person charged with collecting the census information. In Irish records, you can see your ancestor's handwriting, assuming that he or she was the head of household at the time.”
You can find the online Irish census returns at http://www.census.nationalarchives.ie