Napakiak, AK has a population of 404 and is the 20,830th largest city in the United States. The population density is 175 per sq mi which is 15772% higher than the Alaska average and 93% higher than the national average. The median age in Napakiak is 25 which is approximately 25% lower than the Alaska average of 34. In Napakiak, 52% of the population over 15 years of age are married, 26% speak English and 0% speak Spanish. 96% of Napakiak residents were born in Alaska, 4% were born out of state, 0% were born outside of the United States and 0% were foreign born.