Gilcrest, CO has a population of 951 and is the 15,460th largest city in the United States. The population density is 1,173 per sq mi which is 2255% higher than the Colorado average and 1194% higher than the national average. The median age in Gilcrest is 37 which is approximately equal to the Colorado average of 36. In Gilcrest, 67% of the population over 15 years of age are married, 63% speak English and 37% speak Spanish. 56% of Gilcrest residents were born in Colorado, 27% were born out of state, 3% were born outside of the United States and 15% were foreign born.