O calahan Family History

You can see how O calahan families moved over time by selecting different census years. The O calahan family name was found in the USA between 1880 and 1920. The most O calahan families were found in USA in 1880. In 1880 there were 12 O calahan families living in New York. This was about 67% of all the recorded O calahan's in USA. New York had the highest population of O calahan families in 1880.

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