Kyzylorda ((Қызылорда облысы) is a province of Kazakhstan. Its capital is the city of Kyzylorda, with a population of 157,400. The province itself has a population of 590,000. Other notable settlements include Aralsk, Qazaly (Kazalinsk) and the Russian-administered Baikonur, which services the Baikonur Cosmodrome. The province borders neighboring country Uzbekistan, as well as three other provinces: Aktobe Province, Karagandy Province, and South Kazakhstan Province. The Syr Darya River, flowing from the Tian Shan mountains to the Aral Sea, passes through Kyzylorda Province. The total area of the province is 226,000 square kilometers.