Age and Sex Composition: 2010 (2010 Census Briefs)
"Focusing on a population’s age and sex composition is one of the most basic ways to understand population change over time. Since Census 2000, the population has continued to grow older, with many states reaching a median age over 40 years. At the same time, increases in the number of men at older ages are apparent. Understanding a population’s age and sex composition yields insights
into changing phenomena and highlights future social and economic challenges..."