You've got family at Ancestry.

Find more Jam 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 42 more people named Jam 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 50 people named Jam in the 1930 U.S. Census. In 1940, there were 84% more people named Jam in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 92 people named Jam were living in the United States. In a snapshot:

  • 25% owned their homes, valued on average at $1,560
  • 78 rented out rooms to boarders
  • For 38 females, Jane was the most common name
  • 8 women had paying jobs

Learn where they came from and where they went.

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

  • 40% were born in foreign countries
  • Most immigrants originated from China
  • 32% were first-generation Americans
  • 26% migrated within the United States from 1935 to 1940