Geronimo Estates, AZ has a population of 112 and is the 26,610th largest city in the United States. The population density is 85 per sq mi which is 47% higher than the Arizona average and 7% lower than the national average. The median age in Geronimo Estates is 8 which is approximately 79% lower than the Arizona average of 37. In Geronimo Estates, 100% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 84% of Geronimo Estates residents were born in Arizona, 16% were born out of state, 0% were born outside of the United States and 0% were foreign born.