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Find more Gillen 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 281 less people named Gillen 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 5,040 people named Gillen in the 1930 U.S. Census. In 1940, there were 6% less people named Gillen in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 4,759 people named Gillen were living in the United States. In a snapshot:

  • For 2,402 females, Margaret was the most common name
  • Although 50% were female, the most common name for males was John
  • 2% reported their race as other than white
  • 29% of adults were unmarried

Learn where they came from and where they went.

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

  • 30% were first-generation Americans
  • 1,494 were first-generation Americans
  • Most fathers originated from New York
  • Most mothers originated from New York