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.


Farmland Assessment Review Committee

The Farmland Assessment Review Committee meeting has been set for June 01, 2023 at 9:00 a.m. in the Supervisor of Assessments Office, located on the 1st floor of the Courthouse. The public is invited to attend this meeting. Anyone seeking information regarding farmland values or questions concerning this information, please contact the Supervisor of Assessments Office. Office hours are from 8:00 a.m. until 4 p.m. or phone 309-833-5305.

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
Deputy - Katie Snyder
GIS Tech - Shaun Ellis