Montrose, CO has a population of 19,016 and is the 2,293rd largest city in the United States. The population density is 1,050 per sq mi which is 1776% higher than the Colorado average and 1059% higher than the national average. The median age in Montrose is 43 which is approximately 18% higher than the Colorado average of 36. In Montrose, 61% of the population over 15 years of age are married, 82% speak English and 17% speak Spanish. 43% of Montrose residents were born in Colorado, 50% were born out of state, 1% were born outside of the United States and 7% were foreign born.