Principal Demographic Census Results


Central Statistics Office (CSO)

Key information

The census summary results for the following demographic topics: age, sex, marital status, living arrangements, household composition, usual residence, migration, place of birth, nationality, foreign languages, ethnic or cultural background, Irish Travellers, religion, Irish language and housing. Information is supplied in the Small Area Population Statistics (SAPS) classified by Census Enumeration Areas, Dáil Constituencies, Electoral Divisions, Gaeltacht Areas, Garda Regions, Divisions and Districts, Local Electoral Areas, Towns, Urban and Rural areas of each county.

A Methods and Quality Report is available for this statistic.


Census of Population.


The census figures relate to the de facto population, i.e. the figures include visitors present on census night as well as those in residence, while usual residents temporarily absent from the area are excluded from the census count.


Every 5 years

Reference period

A night in April of the relevant census year

Start date



About 12 months after the date of the census (release report), 18 months after the date of the census (SAPS)


  • For classifications
    Please see individual StatCentral entries for the Census report volumes.


People and Society - Population

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accommodation age age dependency alone census constituencies constituency cultural demographic districts divisions dáil elderly electoral enumeration ethnic ethnicity facto family foreign gaeltacht heating households housing language living map maps marital migration nationality occupancy occupied population religion residence residents sap sapmap saps sewerage speak speaking travellers