Joncofski Family History

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

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