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Find more Mas 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 55 more people named Mas 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 302 people named Mas in the 1930 U.S. Census. In 1940, there were 18% more people named Mas in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 357 people named Mas were living in the United States. In a snapshot:

  • 6% were disabled
  • 105 reported their race as other than white
  • Although 37% were female, the most common name for males was James
  • 111 were children

Learn where they came from and where they went.

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

  • The most common mother tongue was Chinese
  • 8% migrated within the United States from 1935 to 1940
  • 24% were first-generation Americans
  • They most commonly lived in Connecticut