O'halloran Family History

You can see how O'halloran families moved over time by selecting different census years. The O'halloran family name was found in the USA, Canada, and Scotland between 1871 and 1920. The most O'halloran families were found in USA in 1880. In 1911 there were 3 O'halloran families living in Ontario. This was 100% of all the recorded O'halloran's in Canada. Ontario had the highest population of O'halloran families in 1911.

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