Slonczynski Family History

You can see how Slonczynski families moved over time by selecting different census years. The Slonczynski family name was found in the USA in 1920. In 1920 there was 1 Slonczynski family living in Illinois. This was about 50% of all the recorded Slonczynski's in USA. Illinois and 1 other state had the highest population of Slonczynski families in 1920.

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