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Find more Mrozek 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 139 more people named Mrozek 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 500 people named Mrozek in the 1930 U.S. Census. In 1940, there were 28% more people named Mrozek in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 639 people named Mrozek were living in the United States. In a snapshot:

  • 190 were children
  • Most common occupation was machinist
  • Although 45% were female, the most common name for males was John
  • 36% of adults were unmarried

Learn where they came from and where they went.

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

  • They most commonly lived in Pennsylvania
  • 60% were first-generation Americans
  • Most fathers originated from Pennsylvania
  • The most common mother tongue was German