Age

Sources: U.S. Census Bureau, Population Estimates Program (PEP). Updated annually. https://www.census.gov/popest/. U.S. Census Bureau, 2010 Census of Population, Public Law 94-171 Redistricting Data File. Updated every 10 years. http://factfinder.census.gov

Definition:

The Census Bureau's Population Estimates Program (PEP) produces estimates of the population for the United States, its states, counties, cities, and towns, as well as for the Commonwealth of Puerto Rico and its municipios (county-equivalents for Puerto Rico). Additionally, housing unit estimates are produced for the nation, states, and counties. The timing of the release of estimates varies according to the level of geography. The schedule of releases is available at https://www.census.gov/popest/schedule.html.

2010 Census

Definition of age is available at 2010 Census Redistricting Data (Public Law 94-171) Summary File Technical documention., Appendix B.

The availability of demographic detail (age, sex, race and Hispanic origin) varies by geographic level. For the nation, states, and counties, population estimates and the 2010 Census data are available by age, sex, race and Hispanic origin. For cities and towns (incorporated places and minor civil divisions), population estimates by demographic detail are available through QuickFacts - 2010 Census. For Puerto Rico and its municipios, population estimates are available by age and sex; race and Hispanic origin data are available through QuickFacts - 2010 Census.