Onnson Family History

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

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