You've got family at Ancestry.

Find more Jensen 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 3,490 less people named Jensen in the United States — and some of them are likely related to you.

Start a tree and connect with your family.


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 56,195 people named Jensen in the 1930 U.S. Census. In 1940, there were 6% less people named Jensen in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 52,705 people named Jensen were living in the United States. In a snapshot:

  • On average men worked 45 hours a week
  • 24% of adults were unmarried
  • 8,897 adults were unmarried
  • 7,174 owned their homes, valued on average at $3,003

Learn where they came from and where they went.

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

  • Most immigrants originated from Denmark
  • Most fathers originated from Norway
  • Most mothers originated from Norway
  • 15,508 were born in foreign countries