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Find more Mcmillan 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 749 less people named Mcmillan 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 19,435 people named Mcmillan in the 1930 U.S. Census. In 1940, there were 4% less people named Mcmillan in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 18,686 people named Mcmillan were living in the United States. In a snapshot:

  • 96% rented out rooms to boarders
  • 2,886 adults were unmarried
  • 22% of adults were unmarried
  • 5,839 were children

Learn where they came from and where they went.

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

  • 3,748 migrated within the United States from 1935 to 1940
  • Most mothers originated from Alabama
  • Most fathers originated from Alabama
  • They most commonly lived in California