Clackamas County is part of the Chehalem Mountains AVA wine region, which sits on a series of sedimentary ridges that provide diverse soils and growing conditions at slightly higher altitudes than other Willamette Valley vineyards. Some 150 vineyards are located throughout the hilly countryside, comprising three counties—Yamhill, Washington and Clackamas—which frame the southwestern suburbs of the Portland metropolitan area. A total of around 5,000 acres were listed for sale in Clackamas County, Oregon, recently; the combined value of all Clackamas County ranches, farms, hunting land and other rural land and acreage for sale was approximately $386 million. Clackamas County ranks eighth in Oregon for the total acreage of land currently advertised for sale. Of all locations in Clackamas County with ranches, farms, hunting land and other rural land and acreage for sale, Oregon City had the most land for sale. Clackamas County is the 19th biggest county (1,882 square miles) in Oregon. It's located in the Portland Metro Oregon region of Oregon.