Posthlethwait Family History

You can see how Posthlethwait families moved over time by selecting different census years. The Posthlethwait family name was found in the USA in 1840. In 1840 there was 1 Posthlethwait family living in Pennsylvania. This was 100% of all the recorded Posthlethwait's in USA. Pennsylvania had the highest population of Posthlethwait families in 1840.

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