The Census of Ireland was censuses of population that are taken by governments to establish numbers and characteristics of a country's inhabitants. In 1813 a census was taken but there were many problems and so the first full government census of Ireland was taken in 1821. Further censuses were taken at ten-yearly intervals from 1831 through to 1911. No census was taken in 1921, because of the War of Independence. The first census of the population of the Irish Free State was taken in 1926. The censuses from 1851 to 1911 were taken under the supervision of the Registrar General of Births, Deaths and Marriages. The 1926 and all subsequent censuses were taken under the Statistics Act, 1926. The responsibility for taking censuses was transferred from the Registrar General to the newly established Statistics Branch of the Department of Industry and Commerce. The Statistics Branch has since become the Central Statistics Office (https://www.cso.ie/).