Boundary Mapping
All maps use Version 2 of the Google API!

All maps work essentially the same. Either click on a point inside the US or type in a zip code and the program will draw the border for the desired region. Some points will result in no border being drawn due to the point being outside of the polygons in our database. Click here for our new version of 5-Digit Zip Code Boundaries.

Geocoding

Geocoding is the translation of a physical street address to latitude and longitude coordinates. Reverse geocoding translates a latitude/longitude into a street address. The latitude and longitude can be entered numerically or selected by clicking on a map.

Reverse Geocoder uses the 2006 USPS Zip+4 data.
Geocoder uses Geocoder.US system and 2005 FE Tiger/Line data.