Thennich Family History

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

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