You've got family at Ancestry.

Find more Kotlar 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 7 less people named Kotlar 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 107 people named Kotlar in the 1930 U.S. Census. In 1940, there were 7% less people named Kotlar in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 100 people named Kotlar were living in the United States. In a snapshot:

  • 31% of adults were unmarried
  • They typically took 8 weeks of vacation a year
  • The average annual income was $1,074
  • 5% were disabled

Learn where they came from and where they went.

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

  • Most fathers originated from Czechoslovakia
  • Most immigrants originated from Czechoslovakia
  • 39% were born in foreign countries
  • 42 were born in foreign countries