Genesee, CO has a population of 3,625 and is the 7,880th largest city in the United States. The population density is 545 per sq mi which is 994% higher than the Colorado average and 501% higher than the national average. The median age in Genesee is 52 which is approximately 44% higher than the Colorado average of 36. In Genesee, 76% of the population over 15 years of age are married, 94% speak English and 3% speak Spanish. 27% of Genesee residents were born in Colorado, 66% were born out of state, 1% were born outside of the United States and 5% were foreign born.