United Natural Foods is a wholesale distributor to the natural and organic food industry in the United States. Carrying more than 40,000 products, the company supplies more than 20,000 customers and serves a wide variety of retail formats, including chains, independent retailers, conventional supermarkets and food service customers. The company operates a 311,000-square-foot distribution center in Greenwood, Ind., which serves customers in Illinois, Indiana, Ohio and other Midwest states. It also operates a 487,000-square-foot distribution hub in Rocklin, Calif., which services Northern California and surrounding states. United Natural Foods also maintains facilities in Iowa City, Iowa and has corporate headquarters in Danville, Conn. A publicly traded company, United Natural Foods common stock is listed on the NASDAQ Stock Market under the symbol UNFI.