Madison County is a county located in the U.S. state of Idaho. As of the most recent data available, the county has a population of approximately 27,467 people, with a population density of about 58.19 persons per square mile.
The county spans a total land area of 472.00 square miles (1,222.00 square kilometers). The administrative center and county seat is Rexburg, which often serves as a hub for local governance and services. The largest city within the county by population is Thornton.
Geographically, Madison County experiences varied elevations, with its highest point at Sugar City 4,890 ft and its lowest point at Thornton 4,860 ft. The region operates in the UTC-7.