Washington’s vineyard plantings exceeded 40,000 acres in 2010 according to the United States Department of Agriculture. Plantings totaled 40,575.9 acres, up from 36,500 acres in 2009.

The majority of the increase came from plantings in the Yakima Valley (1,832.5 additional acres) and the Horse Heaven Hills (1,524 additional acres). However, the diminutive Red Mountain saw the largest percentage increase – a whopping 40% – growing from 852.4 acres to 1,199.8.

Washington is the second largest wine growing state in the nation behind California. The state is, however, a distant second. For perspective, Napa Valley is home to over 45,000 acres of grapes and California boasts more than ten times that number.

USDA numbers for 2010 are shown below. Note that these numbers do not include the sections of the Walla Walla Valley, Columbia Gorge, and Columbia Valley AVAs that stretch into Oregon.