Benson, AZ has a population of 4,974 and is the 6,510th largest city in the United States. The population density is 119 per sq mi which is 108% higher than the Arizona average and 32% higher than the national average. The median age in Benson is 57 which is approximately 53% higher than the Arizona average of 37. In Benson, 64% of the population over 15 years of age are married, 85% speak English and 15% speak Spanish. 36% of Benson residents were born in Arizona, 61% were born out of state, 1% were born outside of the United States and 2% were foreign born.