Dethlefsen Family History

You can see how Dethlefsen families moved over time by selecting different census years. The Dethlefsen family name was found in the USA, and Canada between 1880 and 1920. The most Dethlefsen families were found in USA in 1920. In 1911 there was 1 Dethlefsen family living in British Columbia. This was 100% of all the recorded Dethlefsen's in Canada. British Columbia had the highest population of Dethlefsen families in 1911.

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