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Find more Kobayashi 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 143 less people named Kobayashi 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 769 people named Kobayashi in the 1930 U.S. Census. In 1940, there were 19% less people named Kobayashi in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 626 people named Kobayashi were living in the United States. In a snapshot:

  • They typically took 8 weeks of vacation a year
  • For 288 females, Chiyoko was the most common name
  • 86%, or 96 people, lived in homes they rented
  • 604 reported their race as other than white

Learn where they came from and where they went.

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

  • Most immigrants originated from Japan
  • 55% were first-generation Americans
  • 44% were born in foreign countries
  • 423 were first-generation Americans