In statistics, a population is the group on which information is being gathered and analyzed. A sample is a representative selection of the population.

Passaic, N.J.: 22,424 persons/sq. mile The following table lists population densities for U.S. cities with populations of at least 50,000 as of 2016: ... Source: U.S. Census Bureau Data Definitions ...

William Seltzer, Population Statistics, the Holocaust, and the Nuremberg Trials, Population and Development Review, Vol. 24, No. 3 (Sep., 1998), pp. 511-552 ...