Salt Creek, CO has a population of 618 and is the 18,258th largest city in the United States. The population density is 1,130 per sq mi which is 2170% higher than the Colorado average and 1148% higher than the national average. The median age in Salt Creek is 45 which is approximately 25% higher than the Colorado average of 36. In Salt Creek, 42% of the population over 15 years of age are married, 58% speak English and 42% speak Spanish. 78% of Salt Creek residents were born in Colorado, 13% were born out of state, 0% were born outside of the United States and 9% were foreign born.