The 1911 Census is the most recent Ireland Census available online. The Irish censuses are tricky to search because many people spoke Gaelic and their answers may have been written in Old Gaelic, then transcribed into modern Gaelic but not translated into English, so you’ll need to explore all possible search options. (Each site will have tips and tricks for searching the 1911 Ireland Census including using wildcards (*). Be sure to exhaust all your search options.)
Fee 1911 Ireland Census
FindMyPast.com
“Find ancestors from all over Ireland in the most recently available complete census for the country. A great place to begin your search, the 1911 Census can show you where your Irish ancestor lived, the members of their immediate family, their ages, occupations and whether they could read and write. For the first time you can search for more than one family member at the same time and by year of birth, and our powerful search can also look for name variants. Start your journey and see who you can find.” This is a subscription site but they’ve got some helpful search tools for getting around the variations in spelling that are problematic in Irish records.
Ancestry.com
“All data in this third-party database was obtained from the source’s website. Ancestry.com does not support or make corrections or changes to the original database. To learn more about these records, please refer to the source’s website.” Ancestry has the 1911 Ireland Census and it’s records came from the National Archives of Ireland.
MyHeritage.com
“The 1911 Ireland census covered all 32 counties of Ireland and enumerated the entire Irish population (about 4.4 million people). This census was conducted on the night of Sunday, 2 April 1911. The “Household Return”—also known as “Form A”—enumerated one household per page, recording information such as name, relationship to head of household, age, marital status, occupation, and birthplace. …Images and index to this census were created by and obtained from the National Archives of Ireland.”
RootsIreland.ie
RootsIreland is an all Irish records subscription site and currently has a few 1911 census returns by county, but it’s very incomplete at present. “The Irish Family History Foundation has been the coordinating body for a network of county genealogy centres and family history societies on the island of Ireland for over thirty years.” “A computerized index of the 1901 and some 1911 returns was compiled by many of our member centres in the early 1990s. …You will need to check what is available in the Online Sources list for each county.”
Free 1911 Ireland Census
The National Archives of Ireland
The 1911 Ireland Census is free at The National Archives of Ireland. This online database was a cooperative effort in partnership with Library and Archives Canada. The basic search on this site searches by surname/last name, forename/first name, county, District Electoral Division, townland/street, and age and gender. The advanced search allows you to search by religion, occupation, relationship to head of family, literacy status, county/country of origin, and more.
“It is important to remember that the names on this site have been transcribed as they were written into the census forms. We have not corrected spellings. Some names are illegible, or appear on a damaged form. You may, therefore, have to try a number of strategies to find the person you seek.” Tips for searching surnames. Do a general search or search by county/parish and select transcription or image.