Oncai Family History

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

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