The links in this article point to a free Heroku instance, which can shut down due to inactivity. It may take a few seconds for the instance to start up.

I’ve uploaded a little experiment to Heroku, showing something I toyed around with a couple years ago. Would it be possible to approximate a map of zipcodes using just centerpoints? I loaded the US zipcode list from¬†GeoNames, and using the center points of each zipcode computed a Voroni Diagram.

I’ve made two versions available. Click anywhere in the US to get a collection of cells in a ~50 mile radius.

  1. Counties (created by unioning all postal codes in a given county)
  2. Postal Codes

Technologies used: