Pinal, AZ has a population of 715 and is the 17,338th largest city in the United States. The population density is 1,631 per sq mi which is 2409% higher than the Arizona average and 1700% higher than the national average. The median age in Pinal is 31 which is approximately 18% lower than the Arizona average of 37. In Pinal, 48% of the population over 15 years of age are married, 88% speak English and 11% speak Spanish. 71% of Pinal residents were born in Arizona, 28% were born out of state, 0% were born outside of the United States and 1% were foreign born.