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Cochise County, AZ, exhibits a slight population decline over the past 13 years, with a CAGR of -0.25%, contrasting with Arizona's overall growth rate of 1.16%. The county's median age is 41.4, higher than the state average of 38.4, indicating an aging population, with 23.2% over 65 years old. The age dependency ratio of 79.5 suggests a significant proportion of dependents, particularly the elderly. Compared to neighboring counties like Pima and Maricopa, which have younger populations and higher growth rates, Cochise County faces demographic challenges that may impact its economic vitality.