Theadorson Family History

You can see how Theadorson families moved over time by selecting different census years. The Theadorson family name was found in the USA in 1880. In 1880 there was 1 Theadorson family living in Illinois. This was 100% of all the recorded Theadorson's in USA. Illinois had the highest population of Theadorson families in 1880.

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