The 1871 Canadian census marked the first regularly scheduled collection of national statistics of the Canadian population on April 2, 1871, as required by section 8 of the British North America Act. The constitution required a census to be taken in 1871 and every tenth year thereafter. Parliament implemented the requirements of the constitution through the Census Act of May 12, 1870. In the first census, the population of Canada was enumerated to be 3,485,761. The following census was the .