Picture Rocks, AZ has a population of 8,562 and is the 4,436th largest city in the United States. The population density is 121 per sq mi which is 110% higher than the Arizona average and 33% higher than the national average. The median age in Picture Rocks is 47 which is approximately 26% higher than the Arizona average of 37. In Picture Rocks, 58% of the population over 15 years of age are married, 90% speak English and 9% speak Spanish. 41% of Picture Rocks residents were born in Arizona, 54% were born out of state, 2% were born outside of the United States and 3% were foreign born.