Iohn Family History

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

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