Beaver Creek, MT has a population of 306 and is the 22,400th largest city in the United States. The population density is 67 per sq mi which is 877% higher than the Montana average and 26% lower than the national average. The median age in Beaver Creek is 36 which is approximately 10% lower than the Montana average of 40. In Beaver Creek, 60% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 72% of Beaver Creek residents were born in Montana, 23% were born out of state, 4% were born outside of the United States and 2% were foreign born.