Mammoth, AZ has a population of 1,553 and is the 12,478th largest city in the United States. The population density is 59 per sq mi which is 3% higher than the Arizona average and 35% lower than the national average. The median age in Mammoth is 39 which is approximately 5% higher than the Arizona average of 37. In Mammoth, 53% of the population over 15 years of age are married, 58% speak English and 42% speak Spanish. 72% of Mammoth residents were born in Arizona, 19% were born out of state, 1% were born outside of the United States and 9% were foreign born.