Jefferson County, Missouri
county in Missouri, United States
Jefferson County is a county in Missouri, United States. The county seat is Hillsboro. In 2020, 226,739 people lived there.[1]
![](http://178.128.105.246/host-http-upload.wikimedia.org/wikipedia/commons/thumb/2/29/Map_of_Missouri_highlighting_Jefferson_County.svg/220px-Map_of_Missouri_highlighting_Jefferson_County.svg.png)
References
change- ↑ "QuickFacts: Jefferson County, Missouri". United States Census Bureau. Retrieved August 11, 2023.