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Find more William relatives and grow your tree by exploring billions of historical records. Taken every decade since 1790, the U.S. Federal Census can tell you a lot about your family. For example, from 1930 to 1940 there were 22,025 more people named William in the United States — and some of them are likely related to you.

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Create, build, and explore your family tree.

What if you had a window into the history of your family? With historical records, you do. From home life to career, records help bring your relatives' experiences into focus. There were 30,642 people named William in the 1930 U.S. Census. In 1940, there were 72% more people named William in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 52,667 people named William were living in the United States. In a snapshot:

  • The typical household was 2 people
  • 5,773 women had paying jobs
  • 22% of women had paying jobs
  • The youngest was less than a year and the oldest was 105

Learn where they came from and where they went.

As William families continued to grow, they left more tracks on the map:

  • Most fathers originated from South Carolina
  • 17% migrated within the United States from 1935 to 1940
  • 8,993 migrated within the United States from 1935 to 1940
  • 2,331 were first-generation Americans