UnitedStatesZIPCodes.org provides a full list of all the ZIP codes in Georgia and throughout the United States. You can view the list on the website or download it as an Excel or CSV file, which makes the data easier to work with for mailings or other projects.
In addition to the ZIP codes themselves, UnitedStatesZIPCodes.org lists other useful information including common cities in each ZIP code, the county of each ZIP code's location and associated area codes. The site also lists whether each ZIP code is for standard mailing addresses or post office boxes. UnitedStatesZIPCodes.org provides ZIP code maps and shipping rates between ZIP codes as well.