O'callahen Family History

You can see how O'callahen families moved over time by selecting different census years. The O'callahen family name was found in the USA in 1880. In 1880 there were 2 O'callahen families living in Illinois. This was 100% of all the recorded O'callahen's in USA. Illinois had the highest population of O'callahen families in 1880.

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