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Find more Lassen 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 94 more people named Lassen 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 1,134 people named Lassen in the 1930 U.S. Census. In 1940, there were 8% more people named Lassen in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 1,228 people named Lassen were living in the United States. In a snapshot:

  • Although 50% were female, the most common name for males was George
  • 4% were disabled
  • On average men worked 44 hours a week
  • The typical household was 3 people

Learn where they came from and where they went.

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

  • 40% were first-generation Americans
  • The most common mother tongue was Danish
  • Most immigrants originated from Denmark
  • Most fathers originated from Illinois