Ponca City, city (1990 pop. 26,359), Kay co., N Okla., on the Arkansas River; founded 1893 with the opening of the Cherokee Strip, inc. 1899. It is a trade, processing, and shipping hub in a grain, livestock, and oil area. Industries include metal spinning and pellet mills; chemicals, metal products, building materials, machinery, and carbon black are manufactured. Ponca City has many parks, the Pioneer Women's Museum, and a Native American museum. Nearby are several Native American reservations.