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Find more Janson 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 578 more people named Janson 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 2,388 people named Janson in the 1930 U.S. Census. In 1940, there were 24% more people named Janson in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 2,966 people named Janson were living in the United States. In a snapshot:

  • 4% reported their race as other than white
  • 618 adults were unmarried
  • The average annual income was $1,112
  • 95% rented out rooms to boarders

Learn where they came from and where they went.

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

  • 851 were first-generation Americans
  • Most mothers originated from Sweden
  • 25% were born in foreign countries
  • 435 migrated within the United States from 1935 to 1940