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. There was a combined approximately $481 million of land for sale in Oregon's Clackamas County recently on Land.com. The total acreage of all Clackamas County farms, ranches, hunting land and other land for sale was around 5,000 acres. Clackamas County ranks fifth in the Union State for the total number of acres of land currently advertised for sale. Oregon City featured 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.