Gleneagle, CO has a population of 6,583 and is the 5,406th largest city in the United States. The population density is 2,804 per sq mi which is 5532% higher than the Colorado average and 2995% higher than the national average. The median age in Gleneagle is 45 which is approximately 23% higher than the Colorado average of 36. In Gleneagle, 72% of the population over 15 years of age are married, 92% speak English and 3% speak Spanish. 26% of Gleneagle residents were born in Colorado, 64% were born out of state, 3% were born outside of the United States and 7% were foreign born.