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Find more Mclay 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 103 more people named Mclay 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 403 people named Mclay in the 1930 U.S. Census. In 1940, there were 26% more people named Mclay in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 506 people named Mclay were living in the United States. In a snapshot:

  • The typical household was 3 people
  • Most common occupation was salesman
  • 7% were disabled
  • 97% rented out rooms to boarders

Learn where they came from and where they went.

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

  • Most fathers originated from Pennsylvania
  • They most commonly lived in Pennsylvania
  • The most common mother tongue was Scottish
  • 84 migrated within the United States from 1935 to 1940