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Find more Johannsen 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 132 more people named Johannsen 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 1,098 people named Johannsen in the 1930 U.S. Census. In 1940, there were 12% more people named Johannsen in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 1,230 people named Johannsen were living in the United States. In a snapshot:

  • 56%, or 185 people, lived in homes they rented
  • Most common occupation was laborer
  • 96% rented out rooms to boarders
  • The typical household was 3 people

Learn where they came from and where they went.

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

  • 313 were born in foreign countries
  • They most commonly lived in New York
  • 202 migrated within the United States from 1935 to 1940
  • Most fathers originated from Germany