Hot Sulphur Springs, CO has a population of 799 and is the 16,611th largest city in the United States. The population density is 1,052 per sq mi which is 2013% higher than the Colorado average and 1061% higher than the national average. The median age in Hot Sulphur Springs is 35 which is approximately 4% lower than the Colorado average of 36. In Hot Sulphur Springs, 61% of the population over 15 years of age are married, 95% speak English and 1% speak Spanish. 41% of Hot Sulphur Springs residents were born in Colorado, 49% were born out of state, 2% were born outside of the United States and 8% were foreign born.