Onnsen Family History

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

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