Grand Junction, CO has a population of 60,630 and is the 632nd largest city in the United States. The population density is 1,543 per sq mi which is 2998% higher than the Colorado average and 1603% higher than the national average. The median age in Grand Junction is 35 which is approximately 5% lower than the Colorado average of 36. In Grand Junction, 52% of the population over 15 years of age are married, 92% speak English and 6% speak Spanish. 50% of Grand Junction residents were born in Colorado, 45% were born out of state, 1% were born outside of the United States and 4% were foreign born.