Sitka, AK has a population of 8,921 and is the 4,299th largest city in the United States. The population density is 3 per sq mi which is 183% higher than the Alaska average and 97% lower than the national average. The median age in Sitka is 39 which is approximately 16% higher than the Alaska average of 34. In Sitka, 56% of the population over 15 years of age are married, 89% speak English and 2% speak Spanish. 42% of Sitka residents were born in Alaska, 48% were born out of state, 1% were born outside of the United States and 8% were foreign born.