I'm working on a program where a user wants to enter a town into the system and receive a listing of records based upon 20 miles or so (user configurable) radius of that zip code. I assume(?) there is a logical layout to zip codes to make this possible as I see it on websites all the time. Has anyone worked out a procedure or resources to accomplish this?

Example: enter Denver, CO
returns: all records for Denver, nearby Aurora, Centennial, Englewood, etc.


If there's a plugin that accomplishes this that could be embedded in VFP, that would work too.

Thanks in advance.

Steve Howie, owner
DaSH Technology, LLC