The City and Borough of Sitka, formerly Novo-Arkhangelsk, or New Archangel under Russian rule, is a unified city-borough located on Baranof Island and the southern half of Chichagof Island in the Alexander Archipelago of the Pacific Ocean, in the U.S. state of Alaska. As of the 2010 census, the population was 8,881.In terms of land area, it is the largest city-borough in the U.S., with a land area of 2,870.3 square miles and a total area of 4,811.4 square miles; however, it is the smallest of Alaska's boroughs. Urban Sitka, the part that is usually thought of as the "city" of Sitka, is on the west side of Baranof Island.