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Find more Koscielski 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 20 less people named Koscielski 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 154 people named Koscielski in the 1930 U.S. Census. In 1940, there were 13% less people named Koscielski in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 134 people named Koscielski were living in the United States. In a snapshot:

  • 10 women had paying jobs
  • 6 were disabled
  • 38% of adults were unmarried
  • 36 were children

Learn where they came from and where they went.

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

  • 85 were first-generation Americans
  • The most common mother tongue was Russian Polish
  • Most fathers originated from Maryland
  • They most commonly lived in Maryland