Trethey Family History

You can see how Trethey families moved over time by selecting different census years. The Trethey family name was found in the USA in 1920. In 1920 there were 2 Trethey families living in Pennsylvania. This was 100% of all the recorded Trethey's in USA. Pennsylvania had the highest population of Trethey families in 1920.

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