Johnergan Family History

You can see how Johnergan families moved over time by selecting different census years. The Johnergan family name was found in the USA in 1840. In 1840 there was 1 Johnergan family living in Illinois. This was 100% of all the recorded Johnergan's in USA. Illinois had the highest population of Johnergan families in 1840.

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