Greeley, CO has a population of 98,975 and is the 314th largest city in the United States. The population density is 2,068 per sq mi which is 4054% higher than the Colorado average and 2183% higher than the national average. The median age in Greeley is 31 which is approximately 16% lower than the Colorado average of 36. In Greeley, 51% of the population over 15 years of age are married, 75% speak English and 22% speak Spanish. 54% of Greeley residents were born in Colorado, 34% were born out of state, 1% were born outside of the United States and 11% were foreign born.