Missoula, MT has a population of 70,117 and is the 522nd largest city in the United States. The population density is 2,399 per sq mi which is 35020% higher than the Montana average and 2548% higher than the national average. The median age in Missoula is 33 which is approximately 18% lower than the Montana average of 40. In Missoula, 43% of the population over 15 years of age are married, 95% speak English and 2% speak Spanish. 50% of Missoula residents were born in Montana, 46% were born out of state, 1% were born outside of the United States and 3% were foreign born.