Age and gender are estimated for the people who live in a particular area. The Community Atlas presents a breakdown of the total population estimates to show the age ranges within a community and the percentage of males and females. The estimate presented here is from the 2010 Census, specifically from Summary File 1.
It can be important to understand the estimated ages and gender for a particular area because it can help to explain the needs and characteristics of a community. For example, a community that has a high percentage of children or elderly residents might have special needs.
Every ten years the U.S. Census Bureau conducts its official population count of the United States (referred to as the Decennial Census). The most recent census was conducted in 2010. The U.S. Census Bureau collects this data in two ways. They first send out a mail-in census form. For those people who do not return their mail-in forms, the Census Bureau sends people to those homes to administer the form in person.
There are two census forms used during the Decennial Census. The first is the short-form, which is asked of every person and housing unit in the United States. On this form are a limited number of questions (Age, Hispanic or Latino origin, Household Relationship, Home Ownership, Number of People, Race, and Sex). The second is the American Community Survey (ACS), which is given to a sample of the population to ask more detailed questions on population, housing, and other social and economic characteristics. The information collected in the ACS is then estimated for the entire population annually.
The data from the short and ACS forms are made public through the U.S. Census Bureau.
Source: U.S. Census – Factfinder
When using these data, please consider the following:
Please visit the U.S. Census Bureau's Question and Answer Center.