Charleston County South Carolina is covered by a total of 39 ZIP Codes. There are 9 ZIP Codes in Charleston County that extend into adjacent counties (Berkeley County, Colleton County, and Dorchester County). Of the ZIP codes within or partially within Charleston County there are 24 Standard ZIP Codes, 3 Unique ZIP Codes and 11 PO Box ZIP Codes.
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 Charleston County and can be turned on and off. Each type of postal code can also be turned on and off.