By law, everyone in Ireland on Census Night must be included in the census.
Statistics Act 1993
The Statistics Act, 1993 is the basic legislation covering all surveys carried out by the Central Statistics Office (CSO), including the census. Section 25 of the Act enables the Taoiseach to make Orders (Statutory Instruments) requiring people to provide information under the Act. Sections 26 and 27 of the Act provide for the Director General of the CSO to require people to complete and return a form following the making of such an Order by the Taoiseach.
The Statistics (Census of Population) Order, 2020 provides for the census to be held on 3 April 2022. It details the information to be provided and the persons required to provide it.
The Constitution of Ireland (Article 16.2) provides that the membership of Dáil Éireann depends on the population as measured by the census.
As an EU Member State, Ireland is obliged to conduct a regular census of its population, as set out in Regulation (EC) No. 763/2008. There are also specific regulations relating to this census – Regulation 2017/543 and Regulation 2017/712.