Onderko Family History

You can see how Onderko families moved over time by selecting different census years. The Onderko family name was found in the USA in 1920. In 1920 there were 14 Onderko families living in Pennsylvania. This was about 54% of all the recorded Onderko's in USA. Pennsylvania had the highest population of Onderko families in 1920.

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