Our Content Providers the National Archives of Ireland have digitised and published online the 1926 Irish census, the first census conducted after the establishment of the Irish Free State.
You can search it online here
Taken on 18 April 1926, it provides a detailed snapshot of life in Ireland during that period. In that year, the census recorded a population of 2,971,992, a decrease of 5.3% from the 1911 census, still recorded under the control of the United Kingdom.
The 1926 census data is currently controlled by the Central Statistics Office (CSO) and has been transferred to the National Archives; it is stored in 1299 boxes, containing over 700,000 return sheets laced together in 2494 canvas volumes, each representing an enumeration area within each of the 26 counties.
The Irish censuses have a troubled history, with most of the original records of the 1821 to 1851 censuses being destroyed by a fire during the Irish Civil War, the1861 and 1871 destroyed soon after collection, and those of 1881 and 1891 pulped during the First World War. Those that suervived can also be searched on the National Archives website.

