> > > I've been googling but haven't seen yet how to best validate a 5-digit > zipcode for use in the US (without using a webservice). > > I have the NSString, I just need to validate it. I know zero RegExp, is > there a formatter I can use? > > > I actually ran into a similar issue with one of my programs (Weather Vane) early on when it only supported US zip codes. I decided to use a free SOAP service to validate the zip code since it removed that as a maintenance burden. You've received a lot replies with the same suggestion, but unfortunately I can't find that service anymore. Everything else out there seems fee based. Maybe someone out there can point you to a free service. Maybe this question was already asked in one of the earlier replies, but I'll ask anyway: What does your application do? Why do YOU need to validate the zip? I use accuweather for my forecasts. If my app sends an invalid zip code, the query fails; that's my validation. _______________________________________________
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