Yampa, CO has a population of 455 and is the 20,133rd largest city in the United States. The population density is 1,890 per sq mi which is 3696% higher than the Colorado average and 1986% higher than the national average. The median age in Yampa is 44 which is approximately 20% higher than the Colorado average of 36. In Yampa, 63% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 53% of Yampa residents were born in Colorado, 44% were born out of state, 1% were born outside of the United States and 1% were foreign born.