Avon, CO has a population of 6,444 and is the 5,498th largest city in the United States. The population density is 801 per sq mi which is 1509% higher than the Colorado average and 784% higher than the national average. The median age in Avon is 31 which is approximately 14% lower than the Colorado average of 36. In Avon, 50% of the population over 15 years of age are married, 56% speak English and 41% speak Spanish. 29% of Avon residents were born in Colorado, 38% were born out of state, 0% were born outside of the United States and 32% were foreign born.