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Find more Ottosen 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 25 less people named Ottosen 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 172 people named Ottosen in the 1930 U.S. Census. In 1940, there were 15% less people named Ottosen in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 147 people named Ottosen were living in the United States. In a snapshot:

  • 3 were disabled
  • 14% of women had paying jobs
  • 93% rented out rooms to boarders
  • For 69 females, Mabel was the most common name

Learn where they came from and where they went.

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

  • Most immigrants originated from Denmark
  • 82 were first-generation Americans
  • 29% migrated within the United States from 1935 to 1940
  • 48% were first-generation Americans