Bethel, AK has a population of 6,365 and is the 5,543rd largest city in the United States. The population density is 143 per sq mi which is 12925% higher than the Alaska average and 58% higher than the national average. The median age in Bethel is 29 which is approximately 13% lower than the Alaska average of 34. In Bethel, 44% of the population over 15 years of age are married, 57% speak English and 1% speak Spanish. 70% of Bethel residents were born in Alaska, 26% were born out of state, 0% were born outside of the United States and 5% were foreign born.