What are the 20 states that grow onions commercially?

The 20 states that grow onions commercially in the United States include California, Texas, Washington, Oregon, Idaho, New Mexico, Nevada, Arizona, Colorado, Michigan, New York, Florida, North Carolina, Georgia, Utah, Maryland, South Carolina, Delaware, Ohio, and Nebraska. These states contribute significantly to the nation's onion production, with varying climates and soil types that support different onion varieties. The largest producers are typically California and Texas.