O'hiearn Family History

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

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