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Find more Blau 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 392 less people named Blau 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 867 people named Blau in the 1930 U.S. Census. In 1940, there were 45% less people named Blau in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 475 people named Blau were living in the United States. In a snapshot:

  • 16 were disabled
  • 130 were children
  • 19% of women had paying jobs
  • The youngest was 1 and the oldest was 85

Learn where they came from and where they went.

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

  • Most fathers originated from Germany
  • They most commonly lived in New Jersey
  • The most common mother tongue was Italian
  • 63 migrated within the United States from 1935 to 1940