Age Groups
This section describes the current and historical age structure of the population. Tables include current estimates of the population for several age groups, including pre-schoolers and other children, working-age adults, and seniors. The median age of the population is shown over time, as are estimates of the youth and elderly population by county.
County Data Tables
AGE-1 Selected age group population estimates
AGE-2 5-year age group population estimates
AGE-3 1-year age group population estimates for children under 5 years
AGE-4 Median age of the population
AGE-5 Population under age 18
Sources for Related Data
Refer to the Data Sources section in the Atlas Guide to learn about sources for more detailed or related data on this topic.
Excerpt from an illustration in an 1890 statistical atlas of the United States, showing the percentage
of each state's population by age and sex. These figures are known as "population pyramids." Age is
represented along the vertical axis, with the male population shown on the left and the female
population shown on the right.
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