help yourself to some zip code stuff here

I'm working on a page where I used the zip code project from sourceforge to calculate distances between zips. I expanded on it to better fit my needs and I'm posting it here in case anyone searches for zip codes, they might find this useful. (I'm the one who mentioned doing this in the support section there)

The original project just had the zips, their lattitude & longitude and state abbreviation in a table and a script to calculate distances.

What I added to the table was the full state name and the city for just about every zip code(over 30,000), via a little php automation.

Now, it can be used to verfiy that a zip matches a city and state, make it easier for people to specify their location just by entering their zip and having city/state filled in automatically, or anything else along those lines. It doesn't have every single zip code in the country, but it covers enough to be very useful. Anyway, this is it.

Will it always display the single/first correct City/Location, or will you have a list of locations that show within that Zip Code? Some cities have multiple Zip Codes, or some Zip Codes spread out through Multiple Cities.

I didn't notice any single zip codes spanning multiple cities, but it does have the multiple zip codes in most cities. So, I guess you could search the table by city and list each zip code in it if you need to do that.