Householders across the country are being reminded that tonight is the night to fill in the census form.

Collections will be begin tomorrow and continue until May 23rd.

Everybody in the country tonight are legally obliged to fill in the form.

The information gathered helps the government to make informed decisions on things like housing, new schools and businesses.

Deirdre Cullen from the Central Statistics Office says the archives from the time before the Easter Rising are fascinating.