Passage: Wheat is produced in almost every state in the United States, and is the principal cereal grain grown in the country. The type and quantity vary between regions. The United States is ranked third in production volume of wheat, with almost 58 million tons produced in the 2012 -- 2013 growing season, behind only China and India. (But the combined production of all European Union nations is larger than that of China.) The United States ranks first in crop export volume; almost 50 % of its total wheat production is exported.

Question: Based on this passage, where do they grow wheat in the us?
Steam of consciousness below:

The important part for answering this question is: Wheat is produced in almost every state in the United States, and is the principal cereal grain grown in the country.
So, the answer is almost every state.