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Find more Sienkiewicz 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 261 more people named Sienkiewicz 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 525 people named Sienkiewicz in the 1930 U.S. Census. In 1940, there were 50% more people named Sienkiewicz in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 786 people named Sienkiewicz were living in the United States. In a snapshot:

  • The youngest was 1 and the oldest was 75
  • 213 adults were unmarried
  • They typically took 12 weeks of vacation a year
  • Although 46% were female, the most common name for males was Edward

Learn where they came from and where they went.

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

  • 326 were first-generation Americans
  • Most mothers originated from Russia
  • Most immigrants originated from Poland
  • 62% were first-generation Americans