Koolen Family History

You can see how Koolen families moved over time by selecting different census years. The Koolen family name was found in the USA in 1920. In 1920 there was 1 Koolen family living in New Jersey. This was about 50% of all the recorded Koolen's in USA. New Jersey and 1 other state had the highest population of Koolen families in 1920.

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