Neat little CSV with US/territorial zip & area codes
Bill Bercik has a nice little Ajax programming tutorial in PHP for dynamically displaying city names and area codes after a user specifices a zip code. The key component of the downloadable source code is a CSV that contains nearly 42,800 zip codes and area codes for U.S. cities and cities within U.S. territories, which can be easily imported into a database. It's a great source for data if you're developing apps or utilities involving geocoding.
You can download the tutorial containing the CSV here: http://www.webpasties.com/xmlHttpRequest/complete.zip
Thanks Bill!