Washington State currently produces over half the Nation’s domestically grown apples and has been the leading apple-growing State since the early 1920s. In 2009, Washington State produced 5.4 billion pounds of apples. New York and Michigan produced over 1 billion pounds each. Apple production has been somewhat stable in Washington State, New York, and Michigan since the 1990s, but production in many other States has declined.
source: usda