Onsco Family History

You can see how Onsco families moved over time by selecting different census years. The Onsco family name was found in the USA in 1920. In 1920 there was 1 Onsco family living in Maryland. This was 100% of all the recorded Onsco's in USA. Maryland had the highest population of Onsco families in 1920.

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