Onswin Family History

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

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