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Santa Cruz County, AZ, exhibits a modest population growth rate of 0.8% over the past year, which is below the state average of 1.3%. The county's median age is 37.3, slightly younger than the state median of 38.4. Notably, Santa Cruz has a high young-age dependency ratio of 47.6%, indicating a significant proportion of youth compared to the elderly, who make up 18.5% of the population. The sex ratio of 94.1 suggests a slight female predominance. Compared to neighboring counties like Pima and Maricopa, Santa Cruz's growth and demographic structure reflect unique local characteristics within Arizona.