Here's everything you need to know about Census 2016

The last census was on Sunday April 10, 2011 and recorded Ireland’s population at 4,588,252. But that has likely changed with all the coming and going the nation has seen since then.
This year’s date fortuitously falls on the actual centenary of the 1916 Rising and more than 2.3 million census forms have been printed in advance of Sunday’s national headcount.