Onttko Family History

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

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