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Find more Collahan 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 904 more people named Collahan 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 20 people named Collahan in the 1930 U.S. Census. In 1940, there were 4520% more people named Collahan in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 924 people named Collahan were living in the United States. In a snapshot:

  • 32% of adults were unmarried
  • They typically took 8 weeks of vacation a year
  • 91 owned their homes, valued on average at $3,863
  • Although 49% were female, the most common name for males was James

Learn where they came from and where they went.

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

  • Most mothers originated from New York
  • Most immigrants originated from Ireland
  • 3 were born in foreign countries
  • 35% were first-generation Americans