Beaver Creek, MT has a population of 396 and is the 20,877th largest city in the United States. The population density is 86 per sq mi which is 1169% higher than the Montana average and 5% lower than the national average. The median age in Beaver Creek is 44 which is approximately 9% higher than the Montana average of 40. In Beaver Creek, 58% of the population over 15 years of age are married, 94% speak English and 5% speak Spanish. 48% of Beaver Creek residents were born in Montana, 44% were born out of state, 6% were born outside of the United States and 2% were foreign born.