Green Valley, AZ has a population of 22,249 and is the 1,955th largest city in the United States. The population density is 690 per sq mi which is 1100% higher than the Arizona average and 662% higher than the national average. The median age in Green Valley is 72 which is approximately 95% higher than the Arizona average of 37. In Green Valley, 83% of the population over 15 years of age are married, 93% speak English and 5% speak Spanish. 5% of Green Valley residents were born in Arizona, 87% were born out of state, 1% were born outside of the United States and 7% were foreign born.