Breckenridge, CO has a population of 4,732 and is the 6,699th largest city in the United States. The population density is 787 per sq mi which is 1480% higher than the Colorado average and 768% higher than the national average. The median age in Breckenridge is 31 which is approximately 16% lower than the Colorado average of 36. In Breckenridge, 35% of the population over 15 years of age are married, 94% speak English and 6% speak Spanish. 22% of Breckenridge residents were born in Colorado, 71% were born out of state, 0% were born outside of the United States and 7% were foreign born.