Oregon 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 10,344 people, with a population density of about 13.06 persons per square mile.
The county spans a total land area of 792.00 square miles (2,051.00 square kilometers). The administrative center and county seat is Alton, which often serves as a hub for local governance and services. The largest city within the county by population is Thayer.
Geographically, Oregon County experiences varied elevations, with its highest point at Koshkonong 970 ft and its lowest point at Thayer 532 ft. The region operates in the UTC-6.