Kwethluk, AK has a population of 787 and is the 16,726th largest city in the United States. The population density is 77 per sq mi which is 6943% higher than the Alaska average and 14% lower than the national average. The median age in Kwethluk is 23 which is approximately 31% lower than the Alaska average of 34. In Kwethluk, 43% of the population over 15 years of age are married, 19% speak English and 0% speak Spanish. 99% of Kwethluk residents were born in Alaska, 0% were born out of state, 0% were born outside of the United States and 0% were foreign born.