[Mapserver-users] Zip code boundary shapefiles

[Dean Gadoury]

Good points. There are disclaimers on the distribution site to that 
effect and there may be other limitations too. All the information the 
site should be read through carefully before using the data. These 
boundaries should not be treated as the gospel truth. They are probably 
a pretty good approximation though depending on the intended use.


kallwn wrote:

>Depending upon your needs these may or may not be suitable for 2 reasons.
>
>1) these are Zip Code Tabulation Areas (ZCTA). They are approximations of
>the actual zip code delivery areas and not the actual zip codes.
>2) the post office realign zip codes about every 6-9 months (when/where
>needed).
>
>Since the US Census Bureau have problems working with the USPS zip codes
>these are basically compromises.
>
>
>
>----- Original Message ----- 
>From: "Dean Gadoury" <dgadoury@dmsolutions.ca>
>To: "Jason M. Nielsen" <jnielsen@aero-graphics.com>
>Cc: "Will Richardson" <willrichardson@teq-services.com>; "'Mapserver-users'"
><mapserver-users@lists.gis.umn.edu>
>Sent: Friday, April 23, 2004 7:31 AM
>Subject: Re: [Mapserver-users] Zip code boundary shapefiles
>
>
>  
>
>>Try here: http://www.census.gov/geo/www/cob/z52000.html
>>
>>Jason M. Nielsen wrote:
>>
>>    
>>
>>>Quoting Will Richardson <willrichardson@teq-services.com>:
>>>
>>>
>>>
>>>      
>>>
>>>>Hello,
>>>>
>>>>Does anyone know where I can download the shapefiles for the Zipcode
>>>>boundaries in the US?
>>>>
>>>>Thanks,
>>>>will
>>>>
>>>>
>>>>_______________________________________________
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>>>>Mapserver-users@lists.gis.umn.edu
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>>>>
>>>>
>>>>
>>>>        
>>>>
>>>http://www.census.gov/geo/www/cob/
>>>http://www.census.gov/geo/www/cob/z32000.html
>>>
>>>Not sure if that helps...
>>>_______________________________________________
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>>>
>>>
>>>      
>>>
>>-- 
>>___________________________
>>
>>Dean Gadoury
>>
>>DM Solutions Group
>>30 Rosemount Ave. Suite 200
>>Ottawa, Ontario. K1Y 1P4
>>613.565.5056 ext. 24
>>
>>dgadoury@dmsolutions.ca
>>www.dmsolutions.ca
>>
>>
>>_______________________________________________
>>Mapserver-users mailing list
>>Mapserver-users@lists.gis.umn.edu
>>http://lists.gis.umn.edu/mailman/listinfo/mapserver-users
>>
>>
>>    
>>
>
>
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>
>  
>

-- 
___________________________

Dean Gadoury

DM Solutions Group
30 Rosemount Ave. Suite 200
Ottawa, Ontario. K1Y 1P4
613.565.5056 ext. 24

dgadoury@dmsolutions.ca
www.dmsolutions.ca


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