Ontonio Family History

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

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