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Find more Koorsen 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 16 more people named Koorsen 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 16 people named Koorsen in the 1930 U.S. Census. In 1940, there were 100% more people named Koorsen in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 32 people named Koorsen were living in the United States. In a snapshot:

  • For 16 females, Mary was the most common name
  • 97% rented out rooms to boarders
  • 10 were children
  • 5 adults were unmarried

Learn where they came from and where they went.

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

  • 38% were first-generation Americans
  • 12% migrated within the United States from 1935 to 1940
  • 6 were first-generation Americans
  • They most commonly lived in Pennsylvania