Audrain County is a county located in the U.S. state of Missouri. As of the most recent data available, the county has a population of approximately 25,853 people, with a population density of about 37.31 persons per square mile.
The county spans a total land area of 693.00 square miles (1,795.00 square kilometers). The administrative center and county seat is Mexico, which often serves as a hub for local governance and services. The largest city within the county by population is Mexico.
Geographically, Audrain County experiences varied elevations, with its highest point at Martinsburg 807 ft and its lowest point at Vandalia 763 ft. The region operates in the UTC-6.