Please join the Jefferson County (MO) Genealogical Society for a parking lot sale!
8:00 am to 3:00 pm on Saturday, May 18th
See the events calendar for more details.
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.
Join a project committee to compile researching aids.
One current project is focused on county land records.
See the Volunteer Board for more details.
Thank you for visiting!