Ocallghan Family History

You can see how Ocallghan families moved over time by selecting different census years. The Ocallghan family name was found in the USA, and Canada between 1911 and 1920. The most Ocallghan families were found in USA in 1920, and Canada in 1911. In 1920 there was 1 Ocallghan family living in Illinois. This was about 50% of all the recorded Ocallghan's in USA. Illinois and 1 other state had the highest population of Ocallghan families in 1920.

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