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Find more Jacobus 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 160 less people named Jacobus 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 1,881 people named Jacobus in the 1930 U.S. Census. In 1940, there were 9% less people named Jacobus in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 1,721 people named Jacobus were living in the United States. In a snapshot:

  • 1,663 rented out rooms to boarders
  • 48% owned their homes, valued on average at $5,447
  • 233 owned their homes, valued on average at $5,447
  • 334 adults were unmarried

Learn where they came from and where they went.

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

  • Most immigrants originated from Germany
  • 6% were born in foreign countries
  • 111 were born in foreign countries
  • Most mothers originated from Illinois