kent wrote: > We've all seen web applications that ask the user to enter their > zip/postal codes and then return a set of location based results - a > list based upon nearest geographically proximity. <snip /> You know, this question comes up a lot on The List. Did you search the archive yet? http://www.google.com/search?q=zip+codes+site:lists.evolt.org especially this recent thread: http://lists.evolt.org/archive/Week-of-Mon-20031215/152856.html In a nutshell, I believe what you will need a list of all valid zip codes, and with that come up with a set of zip codes within a specified proximity (e.g. 10/50/200 miles), and then output a list of store locations that have a zipcode within that set. -- Maximillian Von Schwanekamp Dynamic Websites and E-Commerce NeptuneWebworks.com <http://www.neptunewebworks.com/> voice: 541-302-1438 fax: 208-730-6504