McDonough County Assessor's Office

The duties of the Supervisor of Assessments is to keep assessment information, enter sales information, do splits and combination of property, keep aerial maps updated, administer exemptions, process address changes, accept appeals for the Board of Review, and submit assessment information to the Department of Revenue.


Given the recent tornado and storm damage that has occurred in McDonough County, if you have a building, structure or other improvement assessed for property tax purposes that was damaged or destroyed and rendered uninhabitable and unfit for occupancy or customary use, please notify the McDonough County Supervisor of Assessments office. You may call (309) 833-5305 to request for a PTAX-761 Form or Click Here

Deborah Cousins, CIAO
Chief County Assessing Officer

Available Exemptions

Board of Review Rules


GIS Website

Online property search


Real Estate Property Tax Assessment Information

Township Assessors

Supervisor of Assessments
Deborah Cousins
#1 Courthouse Square
Macomb, IL 61455
Phone: (309)833-5305
Fax: (309)833-4022

Chief Deputy - Heather Camp
GIS Tech - Shaun Ellis