I'm trying to set up a "look-up" system for US Postal Zip Codes. 
Essentially, I want to pass the street address, city & state to a 
function that will return the correct zip code.  This shouldn't be 
difficult to do in Xbase++ but I need a database for it to work.

I know that there are many such facilities on the web but I really don't 
want to have to link to the web - just simple seek on a dbf.

Does anyone know exactly where I could get such a table?

Thanks, Joe

Joe Carrick wrote:

> I'm trying to set up a "look-up" system for US Postal Zip Codes. 
[...]
> Does anyone know exactly where I could get such a table?

How about this:

http://www.usps.com/ncsc/addressinfo/zip4.htm
http://ribbs.usps.gov/addressing/documents/tech_guides/pubs/AIS.PDF

Thomas