You've got family at Ancestry.

Find more Jacobi 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 159 less people named Jacobi in the United States — and some of them are likely related to you.

Start a tree and connect with your family.

Gender

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 1,922 people named Jacobi in the 1930 U.S. Census. In 1940, there were 8% less people named Jacobi in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 1,763 people named Jacobi were living in the United States. In a snapshot:

  • The average annual income was $1,246
  • 200 owned their homes, valued on average at $4,689
  • For 879 females, Helen was the most common name
  • Most common occupation was farmer

Learn where they came from and where they went.

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

  • 17% were born in foreign countries
  • 335 were born in foreign countries
  • 40% were first-generation Americans
  • They most commonly lived in Wisconsin