A list of ZIP codes is available at UnitedStatesZIPCodes.org, which provides full lists of ZIP codes for each state in the United States. Types of ZIP codes listed include standard, PO boxes, military and single-address ZIP codes.Continue Reading
UnitedStatesZIPCodes.org also offers searches of ZIP codes by address, city or county. The site provides shipping rates for every ZIP code in its database, as of April 2015. Rates are calculated based on the sender's ZIP code, the destination ZIP code and the type of shipping service selected.
The website also features demographics information, including area population, housing units, population density and land area, for each ZIP code.Learn more about Postal Services