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Santa Cruz County Government

Public Services / Government Office

2150 N Congress Dr,
Nogales, AZ 85621

(520) 375-7800

Call (520) 375-7800
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Santa Cruz is a county in southern Arizona. As of the 2010 census, its population is 47,420.[1] The county seat is Nogales.[2] The county was established in 1899. It borders Pima County to the north and west, Cochise County to the east, and the Mexican state of Sonora to the south.