Star Valley, AZ has a population of 1,976 and is the 11,090th largest city in the United States. The population density is 55 per sq mi which is 5% lower than the Arizona average and 40% lower than the national average. The median age in Star Valley is 55 which is approximately 47% higher than the Arizona average of 37. In Star Valley, 68% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 34% of Star Valley residents were born in Arizona, 62% were born out of state, 2% were born outside of the United States and 2% were foreign born.