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. The value of land for sale in Yamhill County, Oregon, recently on Land.com was almost $311 million. This represents almost 7,000 acres of land and rural real estate for sale in Yamhill County. Yamhill County ranks 13th in the Beaver State for the total acreage of land currently advertised for sale. Among cities in Yamhill County with land and rural real estate for sale, Mcminnville featured the most land for sale. Yamhill County is Oregon's 32nd largest county (718 square miles). It's located in the Northwest Oregon region of the state.