The deep, porous soil yields corn and other grains in tremendous quantities, and the corn-fed hogs and cattle are nationally known. In 1997, Iowa led the nation in the production of corn, soybeans, hogs, and pigs, and ranked in the top 10 in the raising of cattle. Other major crops are hay and oats. Iowa has in recent years taken in the second highest farm income of any state.
Agriculture also benefits the state's chief industry, food processing, and in Sioux City and Cedar Rapids many factories process farm products. Nonelectrical machinery, farm machinery, tires, appliances, electronic equipment, and chemicals are among the other manufactures. Cement is the most important mineral product; others are stone, sand, gravel, and gypsum. Mineral production is small, however. Communications, finance, and insurance industries are especially important in Des Moines.