San Simon, AZ has a population of 141 and is the 25,881st largest city in the United States. The population density is 202 per sq mi which is 251% higher than the Arizona average and 122% higher than the national average. The median age in San Simon is 42 which is approximately 12% higher than the Arizona average of 37. In San Simon, 50% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 66% of San Simon residents were born in Arizona, 28% were born out of state, 0% were born outside of the United States and 6% were foreign born.