You've got family at Ancestry.

Find more Rosenzwig 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 115 more people named Rosenzwig 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 28 people named Rosenzwig in the 1930 U.S. Census. In 1940, there were 411% more people named Rosenzwig in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 143 people named Rosenzwig were living in the United States. In a snapshot:

  • 2 were disabled
  • 84%, or 31 people, lived in homes they rented
  • 36 adults were unmarried
  • 23 were children

Learn where they came from and where they went.

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

  • The most common mother tongue was Russian
  • 9 were born in foreign countries
  • Most fathers originated from Russia
  • They most commonly lived in Pennsylvania