Navigate Up
Sign In
Assessor's Department
COVID-19 Department Procedures

Any assessment or exemption questions can be answered Monday- Friday from 8:00 a.m. to 5:00 p.m. by calling 618-825-2502 or emailing questions to 

All homestead exemption applications that we process are available on the Assessor’s Department page of the St. Clair County Website under the Documents and Forms section (left side of the page). Completed applications and supporting documentation can be mailed to the address listed on the application or scanned and emailed to

Functions of the St. Clair County Assessor's Office
It is the function of the Assessor to administer an accurate, equitable and timely assessment of all real property in St. Clair County. This mandated function includes but is not limited to the following:
Monitor and comply with the Illinois State Statutes and the Illinois Department of Revenue procedures.
Apply qualified exemptions.
Provide proper taxpayer information of assessments through mailed notices and publication.
Timely certification of the completed assessment roll to the Board of Review to facilitate timely tax calculation and billing as required by statue.
Defend decisions when an appeal is made to the Illinois Property Tax Appeal Board.
Real property in St. Clair County is assessed on a quadrennial basis. The assessments are alternated among 22 townships in the County.
The office hours are M-F 8am - 5pm.
Pursuant to the Gubernatorial Disaster Proclamation of May 3, 2019, the Assessor's office has the PTAX -245 available to any St. Clair County resident that has experienced substantial damage from the effects of the severe storms and flooding. Please call 618-825-2704 for more information.
Our staff can answer questions regarding the calculation of property record cards and the verification of property ownership. We can assist those wishing to view or compare sales of properties throughout the County. Applications are available in the Assessor's Office and our staff can provide assistance in filling out these forms. Call 825-2704.
Mobile Home Assessments-
Organizations, service clubs, community groups and churches may request a representative of the Assessor's Office to make a presentation before their membership. Representatives are prepared to provide information on the assessment process and tax related topics. We can also provide staff for additional help. A speaker can be requested by calling 618-277-6600, ext. 2518.
Ann Martz Barnum
Chief Deputy
Commercial Property
Tony Morton
Phone: 618-277-6600, ext. 2521
Tamarcus Page
Phone: 618-277-6600, ext. 2513
Farm Valuation
Dan Baudendistel
Phone: 618-277-600, ext. 2504
Angie York
Phone: 618-277-6600, ext. 2511
Residential Property
Phone: 618-277-6600, ext 2506
Mobile Home
Kristen Myatt
Phone: 618-277-6600, ex 2509
Customer Service Team
Phone: 618-825-2704
Fax: 618-825-2757
Forestry Management
Regional Forestry Manager - Mark Brown - 618-295-2877
Conservation Stewardship
Springfield Office - 217-785-8284
Change of address for tax bills/assessment change cards
Mapping and Platting Department: 618-277-6600, ext. 2533
Property Assessment Appeal
Board of Review, 618-277-6600, ext. 2489
Mobile Home Delinquent Tax
County Clerk's Office, 618-277-6600, ext. 2363
Mobile Home Tax
Treasurer's Office, 618-277-6600, 2451
Tax Sale
County Clerk's Office, 618-277-6600
Tax Rate
County Clerk's Office, 618-277-6600, ext. 2365