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Find more Koi 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 17 less people named Koi 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 51 people named Koi in the 1930 U.S. Census. In 1940, there were 33% less people named Koi in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 34 people named Koi were living in the United States. In a snapshot:

  • 59% were children
  • For 21 females, Helen was the most common name
  • 2 owned their homes, valued on average at $2,100
  • On average men worked 46 hours a week

Learn where they came from and where they went.

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

  • Most mothers originated from Hungary
  • 35% were first-generation Americans
  • 26 were born in foreign countries
  • Most immigrants originated from Hungary