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You've got family at Ancestry.

Find more Petrak 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 74 more people named Petrak 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 296 people named Petrak in the 1930 U.S. Census. In 1940, there were 25% more people named Petrak in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 370 people named Petrak were living in the United States. In a snapshot:

  • 27% of adults were unmarried
  • 41% owned their homes, valued on average at $2,977
  • The typical household was 3 people
  • 30 owned their homes, valued on average at $2,977

Learn where they came from and where they went.

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

  • Most fathers originated from Czechoslovakia
  • 25% were born in foreign countries
  • 74 were born in foreign countries
  • 33 migrated within the United States from 1935 to 1940