You've got family at Ancestry.

Find more Koopman 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 75 more people named Koopman 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 1,097 people named Koopman in the 1930 U.S. Census. In 1940, there were 7% more people named Koopman in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 1,172 people named Koopman were living in the United States. In a snapshot:

  • 371 were children
  • The average annual income was $1,188
  • 1,136 rented out rooms to boarders
  • 86 women had paying jobs

Learn where they came from and where they went.

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

  • They most commonly lived in Iowa
  • 17% were born in foreign countries
  • 200 migrated within the United States from 1935 to 1940
  • 17% migrated within the United States from 1935 to 1940