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Find more Mrowczynski 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 37 more people named Mrowczynski 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 68 people named Mrowczynski in the 1930 U.S. Census. In 1940, there were 54% more people named Mrowczynski in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 105 people named Mrowczynski were living in the United States. In a snapshot:

  • 33 adults were unmarried
  • 27 were children
  • 28% of women had paying jobs
  • The average annual income was $924

Learn where they came from and where they went.

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

  • Most mothers originated from Poland
  • They most commonly lived in Pennsylvania
  • 3% migrated within the United States from 1935 to 1940
  • 32% were born in foreign countries