You've got family at Ancestry.

Find more Oyama 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 109 more people named Oyama in the United States — and some of them are likely related to you.

Start a tree and connect with your family.


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 266 people named Oyama in the 1930 U.S. Census. In 1940, there were 41% more people named Oyama in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 375 people named Oyama were living in the United States. In a snapshot:

  • The average annual income was $620
  • 8% owned their homes, valued on average at $2,533
  • 150 were children
  • 97% reported their race as other than white

Learn where they came from and where they went.

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

  • 39% were born in foreign countries
  • They most commonly lived in Hawaii
  • 160 were first-generation Americans
  • Most mothers originated from Japan