You've got family at Ancestry.

Find more Kotraba 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 9 less people named Kotraba 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 Kotraba in the 1930 U.S. Census. In 1940, there were 33% less people named Kotraba in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 18 people named Kotraba were living in the United States. In a snapshot:

  • The average annual income was $1,222
  • The youngest was 2 and the oldest was 65
  • Although 61% were female, the most common name for males was Frank
  • 7 were children

Learn where they came from and where they went.

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

  • 15% were born in foreign countries
  • 4 were born in foreign countries
  • They most commonly lived in California
  • Most immigrants originated from Czechoslovakia