Posted by "Sandy Keathley" on 10/08/22 11:32

> > Does anyone know of any commercial or free implementations of
> > this? Is it
> > primarily a database problem or is their some way (computationally) to
> > compute the probable proximity of two zip codes?


There is a class called zipLocator. I think I found it at
phpclasses.org. It uses a large zipcode database, which can be
downloaded for free (the address is in the class).

This will return all zipcodes within a specified distance from the
target zipcode (10 mi, 50 mi, etc.).

If you can't find it, contact me offline.

Regards,

SK

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sandy@KeathleyWebs.com
972-569-8464

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