This information requested is collected by the Central Statistics Office , as part of the regular Census of Population. I understand that relevant data from the 2016 census will be available from the Central Statistics Office on 20 April 2017. The figures from the 2011 census for the four Dublin Local Authorities are set out in the following table.
Local Authority
|
Total Dwellings with a Single Occupant
|
Dublin City
|
63,795
|
Dún Laoghaire-Rathdown
|
17,436
|
Fingal
|
16,000
|
South Dublin
|
15,576
|
This table has been extracted from data available at http://www.cso.ie/en/census/census2011reports/census2011profile5householdsandfamilies-livingarrangementsinireland/.