Estes Park, CO has a population of 6,230 and is the 5,611th largest city in the United States. The population density is 903 per sq mi which is 1713% higher than the Colorado average and 896% higher than the national average. The median age in Estes Park is 59 which is approximately 61% higher than the Colorado average of 36. In Estes Park, 69% of the population over 15 years of age are married, 93% speak English and 4% speak Spanish. 27% of Estes Park residents were born in Colorado, 67% were born out of state, 1% were born outside of the United States and 6% were foreign born.