Kansas is a state in the Midwestern United States. Its capital is Topeka and its largest city is Wichita. Kansas is a landlocked state bordered by Nebraska to the north; Missouri to the east; Oklahoma to the south; and Colorado to the west. Kansas is named after the Kansas River, which in turn was named after the Kansa Native Americans who lived along its banks. The flag of the state of Kansas was adopted in 1927. The elements of the state flag include the Kansas state seal and a sunflower. This original design was modified in 1961 to add the name of the state at the bottom of the flag. 4K Resolution.