Trethof Family History

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

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