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Find more Leahy 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 1,162 less people named Leahy 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 6,530 people named Leahy in the 1930 U.S. Census. In 1940, there were 18% less people named Leahy in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 5,368 people named Leahy were living in the United States. In a snapshot:

  • 682 women had paying jobs
  • 5,106 rented out rooms to boarders
  • They typically took 8 weeks of vacation a year
  • 24% were children

Learn where they came from and where they went.

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

  • 10% migrated within the United States from 1935 to 1940
  • 517 migrated within the United States from 1935 to 1940
  • Most immigrants originated from Ireland
  • Most mothers originated from Ireland