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Find more Mass 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 5,615 more people named Mass 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 3,478 people named Mass in the 1930 U.S. Census. In 1940, there were 161% more people named Mass in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 9,093 people named Mass were living in the United States. In a snapshot:

  • 56%, or 1,242 people, lived in homes they rented
  • They typically took 9 weeks of vacation a year
  • 31% were children
  • 96% rented out rooms to boarders

Learn where they came from and where they went.

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

  • 456 were born in foreign countries
  • Most immigrants originated from Germany
  • They most commonly lived in New York
  • 1,759 migrated within the United States from 1935 to 1940