Broomfield, CO has a population of 62,449 and is the 606th largest city in the United States. The population density is 1,892 per sq mi which is 3700% higher than the Colorado average and 1989% higher than the national average. The median age in Broomfield is 38 which is approximately 3% higher than the Colorado average of 36. In Broomfield, 63% of the population over 15 years of age are married, 88% speak English and 5% speak Spanish. 40% of Broomfield residents were born in Colorado, 49% were born out of state, 2% were born outside of the United States and 9% were foreign born.