San Joaquin County California ZIP Codes - Map and Full List

San Joaquin County California is covered by a total of 48 ZIP Codes. There are 8 ZIP Codes in San Joaquin County that extend into adjacent counties (Alameda County, Calaveras County, Sacramento County, Solano County, and Stanislaus County). Of the ZIP codes within or partially within San Joaquin County there are 32 Standard ZIP Codes, 4 Unique ZIP Codes and 11 PO Box ZIP Codes.

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San Joaquin County California ZIP Code Map

Click on the ZIP Codes in the interactive map to view more information. The map control in the upper right corner can be used to toggle map layers on and off. The red outline is the border of San Joaquin County and can be turned on and off. Each type of postal code can also be turned on and off.

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