Thonnassen Family History

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

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