Ajo, AZ Insights: Population,
Zip Codes, Influence, and Service Areas

Ajo (/ˈɑːhoʊ/ AH-hoh) is an unincorporated community in Pima County, Arizona, United States. It is the closest community to Organ Pipe Cactus National Monument. The population was 3,304 at the 2010 census. Ajo is located on State Route 85 just 43 miles (69 km) from the Mexican border.

Zip Codes in Ajo, AZ that we also serve: 85321





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