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Find more Jansa 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 Jansa in the United States — and some of them are likely related to you.

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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 218 people named Jansa in the 1930 U.S. Census. In 1940, there were 11% less people named Jansa in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 193 people named Jansa were living in the United States. In a snapshot:

  • 97% rented out rooms to boarders
  • 7 were disabled
  • 187 rented out rooms to boarders
  • The typical household was 3 people

Learn where they came from and where they went.

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

  • 37 migrated within the United States from 1935 to 1940
  • The most common mother tongue was Czech
  • Most fathers originated from Czechoslovakia
  • 22% were born in foreign countries