Jefferson County Seal
Jefferson County,
Missouri
Est. 1818
Photo of Rockford Beach Photo of Admin Building Photo of Annex Building Photo of Court House Photo of Soccer Game Photo of Detention Center Photo of Justice Center Photo of Law Enforcement Memorial Photo of Child Fishing Photo of Sheriff Dept Jail Photo of Sheriff East Zone building Photo of Sheriff North Zone building
Ken Waller, County Exectutive

Welcome to
Jefferson County's website

Welcome to Jeffcomo.org, your online connection to Jefferson County, Missouri government. Here you will find information on all Jefferson County Government departments and services as well as Jefferson County elected officials. We continue to work hard to provide you with easy access to information about County government. This website is just a part of Jefferson County’s commitment to providing and maintaining open and transparent County government. Please check back periodically as we will have ongoing improvements. Thank you for visiting Jefferson County online.

 

 

Jefferson County Normal Hours of Operation 
Monday - Friday 8:00 a.m. - 5:00 p.m.

County Information Line and Department Directory: 636-797-5555 

 

 

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November 2018 Sample Ballot
A countywide sample ballot for the November 6, 2018 General Election.
REGISTER TO VOTE
Register to vote or update your voter registration record. The deadline to register to vote for the November 2018 Election is October 10, 2018. (This link will take you to the Missouri Secretary of State's website.)
Upcoming Events
9/24/20186:30 p.m. Jefferson County, Council Meeting
 Admin Center, Assembly Room, 729 Maple Street, Hillsboro, MO
9/27/20186:30 p.m. Planning & Zoning Meeting
 6:30 p.m. Planning & Zoning Meeting
10/11/20184:00 P.M. Board of Zoning Adjustment Meeting
 4:00 P.M. Board of Zoning Adjustment Meeting