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Find more Cosmier 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 7 less people named Cosmier in the United States — and some of them are likely related to you.

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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 17 people named Cosmier in the 1930 U.S. Census. In 1940, there were 41% less people named Cosmier in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 10 people named Cosmier were living in the United States. In a snapshot:

  • The typical household was 5 people
  • 90% rented out rooms to boarders
  • 1 adult was unmarried
  • The youngest was 3 and the oldest was 39

Learn where they came from and where they went.

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

  • Most immigrants originated from Canada French
  • 24% were first-generation Americans
  • The most common mother tongue was French
  • 12% were born in foreign countries