Rifle, CO has a population of 9,488 and is the 4,097th largest city in the United States. The population density is 1,367 per sq mi which is 2645% higher than the Colorado average and 1408% higher than the national average. The median age in Rifle is 31 which is approximately 15% lower than the Colorado average of 36. In Rifle, 64% of the population over 15 years of age are married, 79% speak English and 21% speak Spanish. 45% of Rifle residents were born in Colorado, 42% were born out of state, 1% were born outside of the United States and 12% were foreign born.