The United States sources the vast majority of its flour supply domestically, leveraging its massive agricultural heartland where millions of acres of wheat are cultivated across the Great Plains and Pacific Northwest. Major agricultural states like Kansas, North Dakota, Montana, and Washington produce abundant harvests of hard red winter, hard red spring, soft red winter, and durum wheats, which are processed locally by domestic milling enterprises. While a small fraction of specialized flour products or organic grains may be imported from international trading partners like Canada to satisfy specific regional or commercial demands, the American baking industry is overwhelmingly self-sufficient in raw wheat production and flour manufacturing.