Okallahan Family History

You can see how Okallahan families moved over time by selecting different census years. The Okallahan family name was found in the USA in 1880. In 1880 there was 1 Okallahan family living in Illinois. This was 100% of all the recorded Okallahan's in USA. Illinois had the highest population of Okallahan families in 1880.

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