Thoonsen Family History

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

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