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Find more Sweeney 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 1,793 less people named Sweeney 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 29,687 people named Sweeney in the 1930 U.S. Census. In 1940, there were 6% less people named Sweeney in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 27,894 people named Sweeney were living in the United States. In a snapshot:

  • 3,128 women had paying jobs
  • The typical household was 3 people
  • 784 reported their race as other than white
  • 1,172 were disabled

Learn where they came from and where they went.

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

  • 12% migrated within the United States from 1935 to 1940
  • Most fathers originated from New York
  • The most common mother tongue was Irish
  • 3,369 were born in foreign countries