Casas Adobes, AZ has a population of 68,695 and is the 534th largest city in the United States. The population density is 2,578 per sq mi which is 4385% higher than the Arizona average and 2746% higher than the national average. The median age in Casas Adobes is 41 which is approximately 12% higher than the Arizona average of 37. In Casas Adobes, 56% of the population over 15 years of age are married, 81% speak English and 15% speak Spanish. 38% of Casas Adobes residents were born in Arizona, 50% were born out of state, 2% were born outside of the United States and 10% were foreign born.