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Find more Reilly 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 1,356 less people named Reilly 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 22,005 people named Reilly in the 1930 U.S. Census. In 1940, there were 6% less people named Reilly in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 20,649 people named Reilly were living in the United States. In a snapshot:

  • 5,474 were children
  • 24% of women had paying jobs
  • 151 reported their race as other than white
  • 35% of adults were unmarried

Learn where they came from and where they went.

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

  • They most commonly lived in New Jersey
  • 2,106 migrated within the United States from 1935 to 1940
  • 8,347 were first-generation Americans
  • Most fathers originated from New York