Oracle, AZ has a population of 3,735 and is the 7,750th largest city in the United States. The population density is 237 per sq mi which is 311% higher than the Arizona average and 161% higher than the national average. The median age in Oracle is 49 which is approximately 32% higher than the Arizona average of 37. In Oracle, 63% of the population over 15 years of age are married, 73% speak English and 26% speak Spanish. 53% of Oracle residents were born in Arizona, 39% were born out of state, 2% were born outside of the United States and 6% were foreign born.