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. Land for sale in Washington's Walla Walla County recently totaled nearly $55 million and nearly 5,000 acres. Walla Walla County ranks 23rd in the Evergreen State for the total acreage of land currently advertised for sale. There were two properties listed as sold in Walla Walla County through the Land Network Comparable Sales Program. This represented a total value of $3,400,000. 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 the state.