Wiley, CO has a population of 385 and is the 21,082nd largest city in the United States. The population density is 1,262 per sq mi which is 2153% higher than the Colorado average and 1293% higher than the national average. The median age in Wiley is 44 which is approximately 20% higher than the Colorado average of 36. In Wiley, 58% of the population over 15 years of age are married, 75% speak English and 14% speak Spanish. 50% of Wiley residents were born in Colorado, 34% were born out of state, 6% were born outside of the United States and 10% were foreign born.