Onslaer Family History

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

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