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Find more Duff 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 284 more people named Duff 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 9,437 people named Duff in the 1930 U.S. Census. In 1940, there were 3% more people named Duff in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 9,721 people named Duff were living in the United States. In a snapshot:

  • They typically took 9 weeks of vacation a year
  • 96% rented out rooms to boarders
  • Although 50% were female, the most common name for males was John
  • The average annual income was $1,066

Learn where they came from and where they went.

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

  • Most immigrants originated from Scotland
  • 1,751 migrated within the United States from 1935 to 1940
  • 17% were first-generation Americans
  • 9% were born in foreign countries