The United States is the world’s largest producer of onions. The top onion producing states in the US are California, Washington, and Oregon. Together, these three states produce over half of all onions grown in the US.
California is by far the largest onion producing state in the US, accounting for nearly 40% of all onions grown in the country. The state’s mild climate and long growing season make it ideal for onion production. Washington is the second largest onion producing state in the US, accounting for about 15% of total production. The state’s cool climate and ample rainfall provide perfect growing conditions for onions. Oregon is third largest onion producing state in America, responsible for about 10% of national production. Like Washington, Oregon has a cool climate with plenty of rainfall which makes it ideal for growing onions.