Big Lake, AK has a population of 3,552 and is the 7,976th largest city in the United States. The population density is 31 per sq mi which is 2700% higher than the Alaska average and 66% lower than the national average. The median age in Big Lake is 40 which is approximately 18% higher than the Alaska average of 34. In Big Lake, 63% of the population over 15 years of age are married, 96% speak English and 1% speak Spanish. 43% of Big Lake residents were born in Alaska, 55% were born out of state, 1% were born outside of the United States and 1% were foreign born.