Gateway, AK has a population of 6,061 and is the 5,724th largest city in the United States. The population density is 281 per sq mi which is 25488% higher than the Alaska average and 211% higher than the national average. The median age in Gateway is 35 which is approximately 4% higher than the Alaska average of 34. In Gateway, 60% of the population over 15 years of age are married, 92% speak English and 1% speak Spanish. 43% of Gateway residents were born in Alaska, 51% were born out of state, 3% were born outside of the United States and 4% were foreign born.