Glenwood Springs, CO has a population of 9,806 and is the 3,996th largest city in the United States. The population density is 1,723 per sq mi which is 3360% higher than the Colorado average and 1802% higher than the national average. The median age in Glenwood Springs is 39 which is approximately 7% higher than the Colorado average of 36. In Glenwood Springs, 55% of the population over 15 years of age are married, 73% speak English and 25% speak Spanish. 37% of Glenwood Springs residents were born in Colorado, 46% were born out of state, 0% were born outside of the United States and 17% were foreign born.