Basically, I am looking for a module that can tell me:
I would prefer this to be standalone, so I don't pull a whole bunch of dependencies.
I am basically asking this because I am about to generate a module using this file I found on the U.S. Census Bureau web site, and I don't want to waste time on it if something suitable already exists.
I am not going to look up city names by ZIP code, so I don't care that, e.g., the Tiger file thinks 14850 is just for Ithaca College, but then I also don't know if there are other problems with that file.
If you don't know of a suitable CPAN module, I would also appreciate naming suggestions for such a module, and better sources of data.
I have a feeling the USPS wants to charge for a proper list, and the U.S. Census Bureau is not interested:
In the past, the Census Bureau produced the 1990 Gazetteer ZIP Code file and a 1999 ZIP Code file. These files were produced as byproducts of Census Bureau internal operations. They were not developed as a formal product. However, the Census Bureau has made them available to the public "as is". There will be no updated versions of these files.
U.S. Postal Service does give access to an address information API. I am not sure how to respond to "What is the Web site address (URL) of the site that will be hosting the USPS Web Tools?" for the simple purpose of packaging a look up table, but I am mentioning it here in case someone else finds it useful.
Depending on the user's goals, one of the labeling lists found in pe.usps.gov/text/LabelingLists/ might be suitable. It looks like I am going to use one of those tables as a first pass at reducing the number of cases to be examined.
Finally, Twilio/Wigle.net Street Vector Data Set on Amazon AWS might provide all the detail you might ever need, but I have not checked to see if you can list ZIP codes by states.