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Find more Klein 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 329 less people named Klein 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 45,959 people named Klein in the 1930 U.S. Census. In 1940, there were 1% less person named Klein in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 45,630 people named Klein were living in the United States. In a snapshot:

  • 59%, or 7,075 people, lived in homes they rented
  • 44,179 rented out rooms to boarders
  • 11,892 were children
  • 25% of adults were unmarried

Learn where they came from and where they went.

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

  • 11,065 were born in foreign countries
  • 5,553 migrated within the United States from 1935 to 1940
  • They most commonly lived in Illinois
  • Most fathers originated from Hungary