Jefferson County Seal
Jefferson County,
Est. 1818
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Home  County Offices  Assessor


The Department of the County Assessor

Administration Center
LL17 (lower level)
729 Maple Street, Hillsboro, Missouri 63050


Hours:  8:00 am - 5:00 pm (M-F) -  Holiday Schedule - County Offices Closed

Phone:   Real Estate Questions:  636-797-5466

               Personal Property Questions:  636-797-5343


(see Contact Information for departmental listing)



The Department of the County Assessor strives to:  

  • assess all property in a fair, and uniform manner based on current market value

  • promptly and efficiently respond to questions, complaints, and needs of the taxpayers of Jefferson County

  • uphold the Constitution and laws of the State of Missouri



Bob Boyer was elected to a four-year term in the November 2016 General Election.  He took office on September 1st, 2017.  Mr. Boyer is a lifelong resident of Jefferson County, graduating from Festus High School and Jefferson College.  Prior to becoming Assessor, Mr. Boyer was a licensed professional land surveyor and spent 15 years practicing surveying in Missouri, Illinois, and Arkansas.


The Assessor's website is intended to answer questions about property tax assessment and provide access to available services. The left side menu includes links to information on real estate, personal property, and on-line forms.  Below are links to the Assessor's GIS (Geographic Information System) data and maps.








Please do not hesitate to contact our office with any questions.  We are here to serve.





Bob Boyer

Jefferson County Assessor  





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