Lee 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 36,062 people, with a population density of about 49.74 persons per square mile.
The county spans a total land area of 725.00 square miles (1,878.00 square kilometers). The administrative center and county seat is Dixon, which often serves as a hub for local governance and services. The largest city within the county by population is Dixon.
Geographically, Lee County experiences varied elevations, with its highest point at Compton 970 ft and its lowest point at Dixon 659 ft. The region operates in the UTC-6.