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 Emergency Hours of Operation 
Monday - Friday 8:00 a.m. - 5:00 p.m.

Please see link below regarding closure of County Offices 

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

Temporary Requirements for Public Access to County Buildings 

 “Marriage Licenses are by appointment only. Please call the Recorder of Deeds Office at 636-797-5415 to schedule an appointment.”

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