Thergen Family History

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

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