Des Moines is the capital and the most populous city in the US state of Iowa. It is also the county seat of Polk County. A small portion of the city extends into Warren County. It was incorporated on September 22, 1851, as Fort Des Moines which was shortened to "Des Moines" in 1857. It is named after the Des Moines River, which may have been adapted from the French Rivière des Moines, literally meaning "River of the Monks." The five-county metropolitan area is ranked 91st in terms of population in the United States according to 2009 estimates with 562,906 residents according to United States Census Bureau. The city proper population was 203,433 at the 2010 census.

Des Moines is a major center for the insurance industry and also has a sizable financial services and publishing business base. In fact, Des Moines was credited with the "number one spot for U.S. insurance companies" in a Business Wire article. The city is the headquarters for the Principal Financial Group, the Meredith Corporation, Ruan Transportation, EMC Insurance Companies, and Wellmark Blue Cross Blue Shield. Other major corporations such as Wells Fargo, ING Group, Nationwide Mutual Insurance Company, Marsh, Monsanto and Pioneer Hi-Bred have large operations in or near the metro area. Forbes magazine ranked Des Moines as the "Best Place for Business" in 2010. Kiplinger's Personal Finance 2008 Best Cities List featured Des Moines as #9.