Vail, CO has a population of 5,363 and is the 6,167th largest city in the United States. The population density is 1,148 per sq mi which is 2206% higher than the Colorado average and 1167% higher than the national average. The median age in Vail is 39 which is approximately 7% higher than the Colorado average of 36. In Vail, 41% of the population over 15 years of age are married, 86% speak English and 3% speak Spanish. 20% of Vail residents were born in Colorado, 67% were born out of state, 1% were born outside of the United States and 11% were foreign born.