For the purpose of genealogical research the two available census reports are those of 1901 & 1911.
From 1821 a census was carried out every ten years.
Unfortunately, a large amount of this material was destroyed in 1922, some was pulped for paper during World War I and some destroyed by government order.
The returns give detailed information relating to all persons, including householders and their dependents, residents of army and R.I.C. barracks, convents, hospitals, and other institutions, similar to present day censuses. The barony, civil parish and townland were the territorial divisions used.
