Visit Site Iowa is often referred to as the “American Heartland.” Des Moines is the capital and largest city, followed by Cedar Rapids. The 2008 U.S. Census data estimated Iowa’s population at approximately 3 million. Forbesrecently ranked Iowa as the 22nd “Best State for Business.”  Iowa ranked 20th in a 2009 K-12 “Academic Achievement” study by the U.S. Chamber of Commerce. Known for its farming, Iowa is the third largest national producer of food, leads in corn production and is a primary producer of soybeans. Unsurprisingly, the first gasoline-powered tractor was invented in Iowa in 1892.< back