St. Michaels, AZ has a population of 1,409 and is the 13,066th largest city in the United States. The population density is 369 per sq mi which is 542% higher than the Arizona average and 307% higher than the national average. The median age in St. Michaels is 40 which is approximately 9% higher than the Arizona average of 37. In St. Michaels, 36% of the population over 15 years of age are married, 29% speak English and 1% speak Spanish. 69% of St. Michaels residents were born in Arizona, 30% were born out of state, 0% were born outside of the United States and 1% were foreign born.