Tretius Family History

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

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