Ketchikan, AK has a population of 8,189 and is the 4,612th largest city in the United States. The population density is 2,179 per sq mi which is 217837% higher than the Alaska average and 2305% higher than the national average. The median age in Ketchikan is 38 which is approximately 13% higher than the Alaska average of 34. In Ketchikan, 48% of the population over 15 years of age are married, 84% speak English and 3% speak Spanish. 41% of Ketchikan residents were born in Alaska, 45% were born out of state, 2% were born outside of the United States and 12% were foreign born.