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Age and Sex

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You are here: Census.govPeople and Households › Age and Sex

Age and Sex

Age

Census Bureau programs define age as the length of time in completed years that a person has lived. For the most recent decennial census, age was the length of time in completed years that a person had lived as of Census Day--April 1, 2010. The Census Bureau’s national surveys compute age as of the interview date

Sex

For the purpose of Census Bureau surveys and the decennial census, sex refers to a person’s biological sex.

The significance of age and sex data

Focusing on a population’s age and sex composition is one of the most basic ways to understand population change over time. In general, the U.S. population continues to grow older with a median age over 40 years old in many states. 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.



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Source: U.S. Census Bureau | Age and Sex |  Last Revised: 2013-11-14T13:24:41.09-05:00