Mountain Home AFB, ID has a population of 3,094 and is the 8,653rd largest city in the United States. The population density is 312 per sq mi which is 1537% higher than the Idaho average and 245% higher than the national average. The median age in Mountain Home AFB is 23 which is approximately 37% lower than the Idaho average of 36. In Mountain Home AFB, 70% of the population over 15 years of age are married, 91% speak English and 3% speak Spanish. 11% of Mountain Home AFB residents were born in Idaho, 78% were born out of state, 4% were born outside of the United States and 7% were foreign born.