Comments on: List of zip codes and their longitude/latitude?

Question: List of zip codes and their longitude/latitude?

alphanerd — Wed, 18 Feb 2004 11:47:19 -0800

I've been charged with writing a program to find customers within a certain radius of a given zip code using their zip code. I was wondering if anyone could point me to a free list of zip codes as well as their latitude and longitude coordinates. [more inside]

Google seems to abound with results that will provide this for a fee, but I'm assuming (or hoping) that a free database exists somewhere. Please note that I am looking for a complete database, and not web-based applications into which you can input a single zip code and obtain the coordinates as output. Thank you very much in advance.

By: Danelope

Danelope — Wed, 18 Feb 2004 12:09:26 -0800

Kevin Roth's Zip Code Search may be what you're looking for.

For reference, Google: "zip code" latitude longitude database. Sixth result is a discussion site called dBforums, wherein the author provides a link to his free db in response to a commercial announcement.

By: alphanerd

alphanerd — Wed, 18 Feb 2004 12:30:00 -0800

Wow, Danelope. This is pretty much everything I was looking for and includes some stuff I was planning on doing from scratch. Thanks a bunch.

By: yerfatma

yerfatma — Wed, 18 Feb 2004 13:00:59 -0800

One caveat on zip code search tools: the database will get out-of-date quickly, especially if you allow for 9 digit searches. Not sure how much they want for a zip code subscription, but it might be worth it. It would appear the Zip Code Search files are from 2000 (the readme references this URL as a source.

By: adamrice

adamrice — Wed, 18 Feb 2004 13:53:19 -0800

Josh Schachter (of GeoURL fame) has a "geowanking" list where they discuss questions just like this.

http://lists.burri.to/mailman/listinfo/geowanking