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Find more Koolman 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 26 more people named Koolman 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 50 people named Koolman in the 1930 U.S. Census. In 1940, there were 52% more people named Koolman in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 76 people named Koolman were living in the United States. In a snapshot:

  • 14 adults were unmarried
  • Although 54% were female, the most common name for males was Charles
  • 9 women had paying jobs
  • 50%, or 12 people, lived in homes they rented

Learn where they came from and where they went.

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

  • Most mothers originated from Germany
  • 50% were first-generation Americans
  • 25 were first-generation Americans
  • 8 were born in foreign countries