[Info-vax] OT: ZIP/Postal code geo-coordinates

[JF Mezei]

John Smith (not the one @ HP) wrote:
> I need to be able to calculate/lookup distances from a specific postal/zip 
> code - eg. within 50 miles of 02138 or 100 km of T0K 0Y0, or equivalent 
> other nationa postal routing codes.

Postal codes are "property" of the post offices, so they would be the
primary source of lookup databases.

However, there are aggregators of such information.  Companies such as
Garmin (they make GPS) have such databases, so does Google for instance.