Slefczak Family History

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

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