Data about the size and composition of a population are gathered in a survey called

Systematic acquisition and recording information concerning members of a given population is called census. This involves collecting and gathering data about the size and the composition of a population in a given country or nation. In the U. S for example census is undertaken after every ten years which involves tallying the population in the country and recording basic information such as age, sex and race. The census is used by the federal government among other reasons to establish the allocation of funding for education programs in the communities and states

Census is the answer