You've got family at Ancestry.

Find more Placentia 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 21 less people named Placentia 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 52 people named Placentia in the 1930 U.S. Census. In 1940, there were 40% less people named Placentia in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 31 people named Placentia were living in the United States. In a snapshot:

  • 35% were children
  • 2 were disabled
  • For 15 females, Mercedes was the most common name
  • The youngest was 2 and the oldest was 56

Learn where they came from and where they went.

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

  • The most common mother tongue was Spanish
  • Most immigrants originated from Mexico
  • 31 were born in foreign countries
  • They most commonly lived in California