Onnio Family History

You can see how Onnio families moved over time by selecting different census years. The Onnio family name was found in the USA in 1920. In 1920 there was 1 Onnio family living in California. This was 100% of all the recorded Onnio's in USA. California had the highest population of Onnio families in 1920.

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