Obrienn Family History

You can see how Obrienn families moved over time by selecting different census years. The Obrienn family name was found in the USA in 1920. In 1920 there was 1 Obrienn family living in Illinois. This was about 50% of all the recorded Obrienn's in USA. Illinois and 1 other state had the highest population of Obrienn families in 1920.

Use census records and voter lists to see where families with the Obrienn surname lived. Within census records, you can often find information like name of household members, ages, birthplaces, residences, and occupations.