Jonckowski Family History

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

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