The government conducted other enumerations over time.
This last information was made voluntary in 1881 and the following enumerations without materially affecting the extent of the record.
Enumerations were conducted independently by the different states until 1871, when the first federal census was taken of the older parts of the Dominion.
A strong argument in favour of the eleventh census, apart from its self-consistency, is that its results as a whole fit in with the subsequent state enumerations.
In eleven cases such enumerations have been taken; and on computing from them and the results of the federal census of 1880 what the population at the date of the eleventh census should have been, if the annual rate of increase had been uniform, it appears that in no case, except New York City and Oregon, was the difference between the enumerations and these estimates over 4%.
