Hayden, CO has a population of 1,786 and is the 11,688th largest city in the United States. The population density is 594 per sq mi which is 1093% higher than the Colorado average and 556% higher than the national average. The median age in Hayden is 40 which is approximately 11% higher than the Colorado average of 36. In Hayden, 49% of the population over 15 years of age are married, 90% speak English and 9% speak Spanish. 56% of Hayden residents were born in Colorado, 39% were born out of state, 3% were born outside of the United States and 3% were foreign born.