Real Estate Questions

What is the assessment process?  How is your real estate value determined?  When is my property reassessed?  You can find out the answer to these questions and more on the Assessor's Real Estate page.

Assessment Process

W...

GIS Services

The Department of the County Assessor offers a variety of Geographic Information System (GIS) applications for public access.  There are several GIS applications including a Map Gallery of PDF maps that you can print or save.  While we s...

Personal Property Questions

Are you a new resident to Jefferson County?  Not sure if you need a waiver? Your address has changed?  Who must declare personal property? These questions can be answered on our Personal Property website page.  Personal Property...

Microenterprise Grant

One-time grant up to $10,000 to help Jefferson County small businesses impacted by COVID-19.

Emergency Rental Assistance Program

Temporary Requirements for Public Access to County Buildings

Effective Monday, March 29, 2021:

• The mask requirement for access to Jefferson County Government operated facilities will be lifted, with the exception of the Jefferson County Courthouse, which is subject to Supreme Court mandate,
• Temperatures will be check...

COVID-19 INFORMATION

Mask Statement

March 25, 2021  --  Today the Jefferson County Health Department Board of Trustees during their regular monthly meeting have decided to allow the ongoing COVID Countywide Mask Order to expire.  The County Executive...

Stay Connected

Notify Me allows you to subscribe to an unlimited number of email lists. Sign up to receive email or text updates on topics of your choice so that you can stay informed. Check out Notify Me today!

Public Open House For Sycamore Lane Bridge Replacement Over Bear Creek

Notice is hereby given to all interested persons that a public open house meeting to view the proposed improvements to the Sycamore Lane Bridge Replacement Project over Bear Creek will be held at Valley Middle School located at 4300 Gravois Road, House Sp...

Public Open House For Armbruster Road, Harness Road, and Doss Hollow Road Bridge Replacement Project

The presently slated improvements are as follows: Jefferson County, Missouri, is proposing bridge replacements, three total. One on Armbruster Road over Haverstick Creek, one on Harness Road over Tributary to Hocum Hollow Creek, and one on Doss Hollow Roa...