There was a total of approximately $62 million of ranches, farms, hunting land and other rural land and acreage for sale in Oregon County, Missouri, recently on Land.com. The total size of all Oregon County ranches, farms, hunting land and other rural land and acreage for sale was approximately 9,000 acres. Oregon County ranks 43rd in Missouri for the combined amount of land currently advertised for sale. Alton featured the most land for sale. Oregon County is the 14th biggest county (791 square miles) in Missouri. It's located in the Southeast Missouri region of Missouri.