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Find more Kroop 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 51 more people named Kroop 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 104 people named Kroop in the 1930 U.S. Census. In 1940, there were 49% more people named Kroop in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 155 people named Kroop were living in the United States. In a snapshot:

  • 4% were disabled
  • The average annual income was $1,004
  • The youngest was 1 and the oldest was 82
  • 98% rented out rooms to boarders

Learn where they came from and where they went.

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

  • Most immigrants originated from Russia
  • 35% were born in foreign countries
  • 45 were first-generation Americans
  • 15 migrated within the United States from 1935 to 1940