Coal Creek, CO has a population of 1,821 and is the 11,570th largest city in the United States. The population density is 194 per sq mi which is 290% higher than the Colorado average and 114% higher than the national average. The median age in Coal Creek is 49 which is approximately 34% higher than the Colorado average of 36. In Coal Creek, 67% of the population over 15 years of age are married, 96% speak English and 1% speak Spanish. 30% of Coal Creek residents were born in Colorado, 64% were born out of state, 2% were born outside of the United States and 4% were foreign born.