Knik-Fairview, AK has a population of 17,038 and is the 2,515th largest city in the United States. The population density is 205 per sq mi which is 18514% higher than the Alaska average and 126% higher than the national average. The median age in Knik-Fairview is 34 which is approximately equal to the Alaska average of 34. In Knik-Fairview, 56% of the population over 15 years of age are married, 91% speak English and 2% speak Spanish. 43% of Knik-Fairview residents were born in Alaska, 52% were born out of state, 2% were born outside of the United States and 4% were foreign born.