O'mahon Family History

You can see how O'mahon families moved over time by selecting different census years. The O'mahon family name was found in the USA in 1880. In 1880 there were 2 O'mahon families living in Illinois. This was about 67% of all the recorded O'mahon's in USA. Illinois had the highest population of O'mahon families in 1880.

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