Begin your search of the 1940 US Census.
Learn more regarding how to search this census by visiting the National Archives.
We offer many resources to help with your genealogy research in Jefferson County, Missouri.
Plan a visit or request a search of the collection.
Share your family history through stories and photos with our
our newest project for publication regarding Jefferson County History.
See the Volunteer Board for more details.
Visit some of the historic sites in the area!
Thank you for visiting!