A list of operations certified to USDA organic standards is available on the NOP website. This list is updated annually and reflects operations certified by certifying agents as of January 2 of each year.
Individual certifying agents may also provide a list of certified clients on their websites. A list of certifying agents, which provides contact information and, where applicable, website addresses, is available here:
http://www.ams.usda.gov/NOPACAs.
The Organic Trade Association also provides a (free) service called
The Organic Pages Online, which is a tool that helps organic industry members find OTA members that are suppliers, certifying agents, manufacturers, distributors, ingredients, consultant services, and more. Please note that USDA is not responsible for the information provided on this site.