How large is the Oregon wine industry, in terms of acreage?

In 2015, total acreage in Oregon was 28,034 acres.

In 2016 the top five varieties produced in Oregon were:

• Pinot noir 17,744 acres
• Pinot gris 3,705 acres
• Chardonnay 1,482 acres
• Riesling 713 acres
• Cabernet Sauvignon 626 acres

(Source: the Wikipedia)