Osage 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 13,062 people, with a population density of about 21.55 persons per square mile.
The county spans a total land area of 606.00 square miles (1,570.00 square kilometers). The administrative center and county seat is Linn, which often serves as a hub for local governance and services. The largest city within the county by population is Linn.
Geographically, Osage County experiences varied elevations, with its highest point at Freeburg 899 ft and its lowest point at Chamois 530 ft. The region operates in the UTC-6.