You've got family at Ancestry.

Find more Lou 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 303 more people named Lou 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 333 people named Lou in the 1930 U.S. Census. In 1940, there were 91% more people named Lou in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 636 people named Lou were living in the United States. In a snapshot:

  • 6% were disabled
  • For 288 females, Helen was the most common name
  • 23 were disabled
  • On average men worked 44 hours a week

Learn where they came from and where they went.

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

  • The most common mother tongue was Danish
  • 35% were first-generation Americans
  • Most fathers originated from China
  • Most immigrants originated from China