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Find more Fierros 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 16 more people named Fierros 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 119 people named Fierros in the 1930 U.S. Census. In 1940, there were 13% more people named Fierros in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 135 people named Fierros were living in the United States. In a snapshot:

  • Although 53% were female, the most common name for males was Francisco
  • 21 adults were unmarried
  • 7% were disabled
  • The typical household was 4 people

Learn where they came from and where they went.

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

  • 56 were first-generation Americans
  • Most mothers originated from Arizona
  • The most common mother tongue was Spanish
  • Most fathers originated from Arizona