Located in a fertile agricultural area to the east of the Columbia River, wheat is Walla Walla County's main agricultural staple. Other crops grown here include?barley, corn, potatoes, asparagus, peas and the county's very own?Walla Walla Sweet Onion. Walla Walla is also home to one of the nation's largest privately owned apple orchards,?Broetje Orchards, as well as some 2,800 acres of grapes across over 120 wineries in the area. A total of approximately 8,000 acres were listed for sale in Washington's Walla Walla County recently; the overall value of all Walla Walla County ranches, farms, hunting land and other rural land and acreage for sale was almost $56 million. Walla Walla County ranks 21st based on the combined acreage of land for sale among the 39 counties in the Evergreen State. Walla Walla had the most land for sale. From an economic perspective, government and state-level services contribute most to Walla Walla County's overall GDP. Walla Walla County is the 26th largest county (1,298 square miles) in Washington. It's located in the Eastern Washington region of Washington.