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Genealogy and Family History

Learn how to research your ancestors.

Research Ancestors (Genealogy)

Historical and government records can help you trace your heritage. Use these free resources to research and build your family tree.

U.S. Census Data and Statistics

The United States Census Bureau provides data about the nation’s people and economy. Every 10 years, it conducts the Population and Housing Census, in which every resident in the United States is counted. The agency also gathers data through more than 100 other surveys of households and businesses every one to five years. You can explore the results of the surveys or find popular quick facts.

The 2020 Census ended in October, 2020. Take a look back at the process.

How is data from the census used?

Your responses can help determine how much funding your local community will receive for public services. Census population data is used to divide the seats in the U.S. House of Representatives among the 50 states. It can also be used to draw boundaries for state legislative and school districts.

Besides using census data for the benefit of public services, you can also use it for genealogical research. To protect the privacy of people who respond to the U.S. Census, all records are kept confidential for 72 years. Find out what genealogical information is available and where you can access it.

What statistics can I get from the census?

Get population and demographic information about the country, individual states, and more:

View the latest QuickFacts statistics and estimates for the most popular topics.

How can I see the results of the census?

Explore a variety of data:

Do I have to respond to the census?

By law, everyone is required to be counted in the census. If you don’t respond, the U.S. Census Bureau will follow up with you in person by visiting your home. 

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Last Updated: March 21, 2022

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