Kemerovo Oblast, also known as Kuzbass, after the Kuznetsk Basin, is a federal subject of Russia. Kemerovo is the administrative center and largest city of the oblast. Kemerovo Oblast is one of Russia's most urbanized regions, with over 70% of the population living in its nine principal cities. Its ethnic composition is predominantly Russian, but native Shors and Kalmak Siberian Tatars also live in the oblast, along with Ukrainians, Volga Tatars, and Chuvash.