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Find more Jaczkowski 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 5 more people named Jaczkowski 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 9 people named Jaczkowski in the 1930 U.S. Census. In 1940, there were 56% more people named Jaczkowski in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 14 people named Jaczkowski were living in the United States. In a snapshot:

  • Although 64% were female, the most common name for males was Frank
  • 25% of adults were unmarried
  • They typically took 3 weeks of vacation a year
  • 1 owned their homes, valued on average at $2,500

Learn where they came from and where they went.

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

  • 5 were born in foreign countries
  • The most common mother tongue was Polish
  • Most immigrants originated from Poland
  • 44% were first-generation Americans