Logan 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 31,183 people, with a population density of about 50.46 persons per square mile.
The county spans a total land area of 618.00 square miles (1,601.00 square kilometers). The administrative center and county seat is Lincoln, which often serves as a hub for local governance and services. The largest city within the county by population is Lincoln.
Geographically, Logan County experiences varied elevations, with its highest point at Atlanta 720 ft and its lowest point at New Holland 560 ft. The region operates in the UTC-6.