Which population characteristics do demographics usually measure? number of resources number of schools ethnicity and race height and weight

Demographic information usually contains information about a person's ethnicity and race.

The aforementioned population characteristics are asked when the United States government takes the census. The US census is a survey taken every decade in order to the government to have a better idea of male/female population, racial makeup, and ethnic makeup. This information helps the federal government to better understand American society at the time the census is taken.