Joncius Family History

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

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