You've got family at Ancestry.

Find more Koszak 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 12 less people named Koszak 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 27 people named Koszak in the 1930 U.S. Census. In 1940, there were 44% less people named Koszak in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 15 people named Koszak were living in the United States. In a snapshot:

  • 2 adults were unmarried
  • 67%, or 2 people, lived in homes they rented
  • The average annual income was $721
  • 47% were children

Learn where they came from and where they went.

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

  • Most immigrants originated from Hungary
  • 41% were born in foreign countries
  • They most commonly lived in Pennsylvania
  • 11 were born in foreign countries