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Find more Kotlan 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 2 less people named Kotlan 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 42 people named Kotlan in the 1930 U.S. Census. In 1940, there were 5% less people named Kotlan in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 40 people named Kotlan were living in the United States. In a snapshot:

  • On average men worked 34 hours a week
  • 1 was disabled
  • Most common occupation was bookeeper
  • Although 62% were female, the most common name for males was Jerry

Learn where they came from and where they went.

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

  • 20% migrated within the United States from 1935 to 1940
  • Most immigrants originated from Czechoslovakia
  • They most commonly lived in New Jersey
  • 52% were first-generation Americans