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Find more Kotros 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 1 more person named Kotros 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 9 people named Kotros in the 1930 U.S. Census. In 1940, there were 11% more people named Kotros in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 10 people named Kotros were living in the United States. In a snapshot:

  • 4 were children
  • The youngest was 9 and the oldest was 54
  • 80% rented out rooms to boarders
  • On average men worked 45 hours a week

Learn where they came from and where they went.

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

  • They most commonly lived in California
  • 44% were born in foreign countries
  • 44% were first-generation Americans
  • Most immigrants originated from Bohemia