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Find more Colahan 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 81 more people named Colahan 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 196 people named Colahan in the 1930 U.S. Census. In 1940, there were 41% more people named Colahan in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 277 people named Colahan were living in the United States. In a snapshot:

  • 7% were disabled
  • 268 rented out rooms to boarders
  • 78 were children
  • 20% of women had paying jobs

Learn where they came from and where they went.

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

  • The most common mother tongue was German
  • 39 migrated within the United States from 1935 to 1940
  • They most commonly lived in Iowa
  • 14% migrated within the United States from 1935 to 1940