Vail, AZ has a population of 11,637 and is the 3,501st largest city in the United States. The population density is 513 per sq mi which is 793% higher than the Arizona average and 466% higher than the national average. The median age in Vail is 37 which is approximately 1% lower than the Arizona average of 37. In Vail, 70% of the population over 15 years of age are married, 88% speak English and 10% speak Spanish. 41% of Vail residents were born in Arizona, 52% were born out of state, 1% were born outside of the United States and 6% were foreign born.