You've got family at Ancestry.

Find more Kosiba 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 55 more people named Kosiba 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 431 people named Kosiba in the 1930 U.S. Census. In 1940, there were 13% more people named Kosiba in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 486 people named Kosiba were living in the United States. In a snapshot:

  • The youngest was less than a year and the oldest was 75
  • The average annual income was $901
  • 35% of adults were unmarried
  • 153 were children

Learn where they came from and where they went.

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

  • 278 were first-generation Americans
  • 31% were born in foreign countries
  • Most fathers originated from Poland
  • They most commonly lived in New York