Question: What was the 2010 census population of this united city-borough located on Baranof Island, from which the government of what was then the District of Alaska was moved in 1906?
Sentence (from "Sitka, Alaska"): The City and Borough of Sitka (Tlingit: "Sheetʼká" ), formerly Novo-Arkhangelsk, or New Archangel under Russian rule (Russian: Ново-Архангельск or Новоaрхангельск , "Novoarkhangelsk "), is a unified city-borough located on Baranof Island and the southern half of Chichagof Island in the Alexander Archipelago of the Pacific Ocean (part of the Alaska Panhandle), in the U.S. state of Alaska.
Relevant evidence: Yes