What date was each census taken?

From 1841 onwards the censuses were taken on the following dates:

• 1841 – 7 June
• 1851 – 31 March
• 1861 – 8 April
• 1871 – 3 April
• 1881 – 4 April
• 1891 – 5 April
• 1901 – 31 March
• 1911 – 2 April
• 1921 – 19 June