Hancock 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 20,121 people, with a population density of about 25.31 persons per square mile.
The county spans a total land area of 795.00 square miles (2,059.00 square kilometers). The administrative center and county seat is Carthage, which often serves as a hub for local governance and services. The largest city within the county by population is Hamilton.
Geographically, Hancock County experiences varied elevations, with its highest point at La Harpe 697 ft and its lowest point at Dallas City 537 ft. The region operates in the UTC-6.