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Find more Kosarek 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 53 more people named Kosarek 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 86 people named Kosarek in the 1930 U.S. Census. In 1940, there were 62% more people named Kosarek in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 139 people named Kosarek were living in the United States. In a snapshot:

  • For 66 females, Rose was the most common name
  • 2% were disabled
  • Most common occupation was bookkeeper
  • 133 rented out rooms to boarders

Learn where they came from and where they went.

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

  • 66% were first-generation Americans
  • The most common mother tongue was Czech
  • They most commonly lived in Illinois
  • 32 migrated within the United States from 1935 to 1940