Welcome to Jefferson County MO
We are 200 years old!
Jefferson County Missouri is celebrating all year long with special events commemorating our county bicentennial! Please visit the official site for more information and to order special Bicentennial items.
Our Genweb Address Has Changed!
Please follow this link to the new address, and don't forget to change your bookmarks!
http://jefferson.mogenweb.org/
Also please visit the Jefferson County MO Heritage and Historical Society for lots of FREE historical and genealogical information.