Pine Brook Hill, CO has a population of 1,091 and is the 14,599th largest city in the United States. The population density is 381 per sq mi which is 666% higher than the Colorado average and 321% higher than the national average. The median age in Pine Brook Hill is 49 which is approximately 35% higher than the Colorado average of 36. In Pine Brook Hill, 83% of the population over 15 years of age are married, 97% speak English and 0% speak Spanish. 29% of Pine Brook Hill residents were born in Colorado, 61% were born out of state, 3% were born outside of the United States and 6% were foreign born.