Thernan Family History

You can see how Thernan families moved over time by selecting different census years. The Thernan family name was found in the USA, and Canada between 1880 and 1920. The most Thernan families were found in USA in 1880. In 1880 there were 8 Thernan families living in Illinois. This was about 80% of all the recorded Thernan's in USA. Illinois had the highest population of Thernan families in 1880.

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