Wasilla, AK has a population of 8,972 and is the 4,276th largest city in the United States. The population density is 724 per sq mi which is 65704% higher than the Alaska average and 699% higher than the national average. The median age in Wasilla is 34 which is approximately 1% higher than the Alaska average of 34. In Wasilla, 53% of the population over 15 years of age are married, 91% speak English and 3% speak Spanish. 42% of Wasilla residents were born in Alaska, 50% were born out of state, 2% were born outside of the United States and 6% were foreign born.