Oncker Family History

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

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