Agricultural or cultural region of the United States
The Corn Belt is a region of the Midwestern United States that, since the 1850s, has dominated corn production in the United States. In the United States, corn is the common word for maize. More generally, the concept of the Corn Belt connotes the area of the Midwest dominated by farming and agriculture.
There is lack of consensus regarding the constituents of the Corn Belt, although it often includes: Iowa, Illinois, Indiana, southern Michigan, western Ohio, eastern Nebraska, eastern Kansas, southern Minnesota, and parts of Missouri. It also sometimes includes: South Dakota, North Dakota, all of Ohio, Wisconsin, all of Michigan, and Kentucky. Some people and industries break the corn belt down even further and refer to it as the Eastern Corn Belt and the Western Corn Belt. 
The region is characterized by level land, deep fertile soils, and a high organic soil concentration.
As of 2008, the top four corn-producing states were Iowa, Illinois, Nebraska, and Minnesota, accounting for more than half of the corn growth in the United States.
More recently, the USA corn belt was mapped at the county level using the Land use and Agricultural Management Practices web-Service (LAMPS), along with animated maps of changes in time (2010-2016).
On account of new agricultural technology developments between 1860 and 1970, the Corn Belt went from producing mixed crops and livestock into becoming an area focused strictly on wheat-cash planting. After 1970, increased crop and meat production required an export outlet, but global recession and a strong dollar reduced exports and created serious problems even for the best farm managers.
Most corn grown today is fed to livestock, especially hogs and poultry. In recent decades soybeans have grown in importance.
By 1950, 99% of corn has been grown from hybrids.
In 1997, the USEPA published its report on United States' ecoregions, in part based on "land use". Its "Level III" region classification contains three contiguous "Corn Belt" regions, Western (47), Central (54), and Eastern (55), stretching from Indiana to eastern Nebraska.
- Banana Belt
- Canadian Prairies, Canada's 'Breadbasket'
- Central Black Earth Region, segment of the Eurasian chernozem belt that lies within Central Russia
- Palliser's Triangle, Canada's semi-arid grain production region
- Peak wheat
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- Hart (1986)
- U.S. Department of Agriculture
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- , Green et al. 2018, Where is the USA Corn Belt, and how is it changing? Sci. Total Environment, Vol. 618, p. 1613-1618.
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- Anderson, J. L. Industrializing the Corn Belt: Agriculture, Technology, and Environment, 1945-1972 (2009) 238 pp. ISBN 978-0-87580-392-0
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- Hart, John Fraser. "Change in the Corn Belt", Geographical Review, Jan 1986, Vol. 76#1 pp. 51–72
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- Power, Richard Lyle. Planting Corn Belt Culture: The Impress of the Upland Southerner and Yankee in the old Northwest (1953)
- Snapp, Roscoe R. Beef Cattle Their Feeding and Management in the Corn Belt States (1950)
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- Wallace, Henry Agard. Henry A. Wallace's Irrigation Frontier: On the Trail of the Corn Belt Farmer 1909 15 articles written by Wallace in 1909; 1991 edition edited by Richard Lowitt, and Judith Fabry