District of Columbia District of Columbia is covered by a total of 285 ZIP Codes. Of the ZIP codes within or partially within District of Columbia there are 30 Standard ZIP Codes, 238 Unique ZIP Codes and 17 PO Box ZIP Codes. Data Updated September 15, 2024
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 District of Columbia and can be turned on and off. Each type of postal code can also be turned on and off.