[thelist] Calculating distnace between two zip codes.

Judah McAuley judah at alphashop.com
Tue Jan 30 19:05:34 CST 2001

At 05:36 PM 1/30/2001 -0500, you wrote:
>(I asked Jeeves!)
>Enter two zip codes, it returns the distance in between.

I will put in my vote for www.jcsm.com  I bought the Zip code package from 
Bud Jay and have been very pleased.  It gets updated once a month 
(apparently zip codes do change fairly often).  It contains a list of zip 
codes and their corresponding latitude and longitude.  It also matches 
city/state pairs to zip codes.  You can also download it in a variety of 
formats. He's got an Access database or you can get an ascii 
comma-delimited form.  I use the ascii format so I can do a table load and 
match it up with data provided by a client.  Bud also provides ASP code to 
show how to do the select statements for a locator program.  The code is 
pretty easily port over to CF.

If you want to, you can take a look at the dealer locator we did for a client:

One caveat, though.  This is a radial search, so the practical limit is 
about a 50 mile radius.  More than 50 miles and the number of zip codes 
contained within the circle gets to be extraordinarily large.

Hope this helps.


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