census

1. An official count or enumeration of members of a population (not necessarily human), usually residents or citizens in a particular region, often done at regular intervals. (countable, uncountable)
2. The people being treated in a healthcare facility, clinic or program. (countable, uncountable)
3. Count, tally. (countable, uncountable)
4. A type of tax levied by feudal lords on peasants. (countable, uncountable)
5. A count of the number of individual patterns within a larger pattern, most often the ash of a soup or a methuselah. (countable, uncountable)

Plural censuses