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 "Juneau, Alaska"): Juneau has been the capital of Alaska since 1906, when the government of what was then the District of Alaska was moved from Sitka as dictated by the U.S. Congress in 1900.
Relevant evidence: Yes