Editing Census tract (section)

=== Ireland ===
In the [[Republic of Ireland]], the [[Central Statistics Office (Ireland)|Central Statistics Office]] (CSO), established in 1949, organises the census.<ref>{{cite web |author1=Seanad Éireann |title=Statistics Bill, 1993: Second Stage |url=https://www.oireachtas.ie/en/debates/debate/seanad/1993-06-17/5/ |website=Seanad Éireann debates |publisher=Houses of the Oireachtas |access-date=8 January 2019 |language=en-ie |date=17 June 1993}}</ref> Beginning from the 2011 census, the CSO website has made available "Small Area Population Statistics" (SAPS) for each "'''small area'''", a subdivision of an [[electoral division (Ireland)|electoral division]] (ED) defined by [[Ordnance Survey Ireland]] constrained by natural landscape features.<ref name="datagovie"/> Formerly [[Roads in the Republic of Ireland|main roads]] also constrained the borders but this was changed to increase [[Information privacy|data privacy]].<ref name="datagovie">{{cite web |title=Small Areas Ungeneralised |location=Ireland |url=https://data.gov.ie/dataset/small-areas-ungeneralised-osi-national-statistical-boundaries-2015 |website=data.gov.ie |access-date=8 January 2019 |date=2015 |archive-date=8 January 2019 |archive-url=https://web.archive.org/web/20190108200737/https://data.gov.ie/dataset/small-areas-ungeneralised-osi-national-statistical-boundaries-2015 |url-status=dead }}</ref> A small area has a minimum of 65 and average of 90 [[household]]s.<ref name="datagovie"/> For the 2016 census there were 18,641 small areas.<ref name="areastats">{{cite web |title=Census 2016 Small Area Population Statistics |url=https://www.cso.ie/en/census/census2016reports/census2016smallareapopulationstatistics/ |location=Ireland|publisher=Central Statistics Office |access-date=8 January 2019 |language=en}}</ref> The 2016 census also provides the population of each of 50,117 [[townland]]s, except those with a population of one sex or two people.<ref name="areastats"/>

From 1926 to 2006, the smallest unit of public reporting was the electoral division (till 1996 called "district electoral divisions" in counties or "[[Ward (electoral subdivision)|wards]]" in the cities). There were 3,409 EDs in 2016.<ref name="areastats"/> Until 1911, the smallest reported unit was the townland in rural areas and the ward in urban areas. Subsequently, townland data was available on application to the CSO. All of the aforementioned are legally defined administrative units, although with no local government functions. From 1996 to 2006, "census enumeration areas" were included in data made available on request for areas within the five [[county borough#Republic of Ireland|county borough]]s but not the 29 [[administrative counties]]. A census enumeration area was the area covered by a single enumerator, and had an average of 330 households.<ref>{{cite web |title=2006 Census Enumeration Areas Boundaries |website=Central Statistics Office |location=Ireland |url=http://census.cso.ie/censusasp/saps/boundaries/eas_bound.htm |access-date=8 January 2019 |language=en}}</ref> This data has since been published online.<ref>{{cite web |title=Census Reports 1821-2006 |url=https://www.cso.ie/en/census/censusreports1821-2006/ |website=Central Statistics Office |access-date=8 January 2019 |location=Ireland |language=en}}</ref>