Yamhill County is part of the 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 around $224 million of farms, ranches, hunting land and other land for sale in Yamhill County recently on Land.com. The total size of all Yamhill County farms, ranches, and rural real estate for sale was around 4,000 acres. Yamhill County ranks 13th out of 36 counties in the Beaver State for the total number of acres of land currently advertised for sale. Mcminnville had the most land for sale. Yamhill County is Oregon's 32nd biggest county (718 square miles). It's located in the Northwest Oregon region of Oregon.