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

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