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Find more Petri 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 113 less people named Petri 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 1,701 people named Petri in the 1930 U.S. Census. In 1940, there were 7% less people named Petri in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 1,588 people named Petri were living in the United States. In a snapshot:

  • For 793 females, Mary was the most common name
  • 1% reported their race as other than white
  • The youngest was less than a year and the oldest was 94
  • 388 were children

Learn where they came from and where they went.

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

  • 39% were first-generation Americans
  • 664 were first-generation Americans
  • They most commonly lived in Illinois
  • 203 migrated within the United States from 1935 to 1940