Mcdonough County is a county located in the U.S. state of Illinois. As of the most recent data available, the county has a population of approximately 32,913 people, with a population density of about 55.88 persons per square mile.
The county spans a total land area of 589.00 square miles (1,526.00 square kilometers). The administrative center and county seat is Macomb, which often serves as a hub for local governance and services. The largest city within the county by population is Macomb.
Geographically, Mcdonough County experiences varied elevations, with its highest point at Blandinsville 729 ft and its lowest point at Industry 660 ft. The region operates in the UTC-6.