Iowa is the king of corn — so why isn't Iowa the king of the sweet corn you eat off the cob? Because America grows two very different “corns.”
Almost all of America's corn is field corn (also called dent corn). It's left to dry hard on the plant, then used mostly for animal feed and fuel (ethanol) — not eaten straight off the cob.
Basis: USDA: the large majority of U.S. corn acreage is field/dent corn used for feed, fuel and processing.
Sweet corn is a different type, picked young and sweet so people can eat it — on the cob, canned, or frozen. It's a much smaller crop grown on far fewer acres.
Basis: USDA vegetable reports: sweet corn is a separate, much smaller crop from field corn.
Because most sweet corn is frozen or canned, states with big processing plants — like Washington, Minnesota and Wisconsin — grow the most, while Florida and California lead fresh sweet corn for eating right away.
Basis: USDA sweet corn statistics: processing vs fresh-market states differ.
Why did the Corn Belt end up mostly growing field corn instead of sweet corn? A common explanation is that feed and fuel need huge, storable, dried harvests — a great match for the Corn Belt's scale. It's a reasonable story, but 'why here' always has many tangled reasons.
※ A hypothesis is an idea that isn't proven yet.
📊 Sources for the rankings mentioned in this note (links to the original data and retrieval dates) are on each quiz page below.