[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 at dmsolutions.ca>
>To: "Jason M. Nielsen" <jnielsen at aero-graphics.com>
>Cc: "Will Richardson" <willrichardson at teq-services.com>; "'Mapserver-users'"
><mapserver-users at 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 at teq-services.com>:
>>>
>>>
>>>
>>>      
>>>
>>>>Hello,
>>>>
>>>>Does anyone know where I can download the shapefiles for the Zipcode
>>>>boundaries in the US?
>>>>
>>>>Thanks,
>>>>will
>>>>
>>>>
>>>>_______________________________________________
>>>>Mapserver-users mailing list
>>>>Mapserver-users at lists.gis.umn.edu
>>>>http://lists.gis.umn.edu/mailman/listinfo/mapserver-users
>>>>
>>>>
>>>>
>>>>        
>>>>
>>>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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>>>Mapserver-users at lists.gis.umn.edu
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>>>
>>>
>>>
>>>      
>>>
>>-- 
>>___________________________
>>
>>Dean Gadoury
>>
>>DM Solutions Group
>>30 Rosemount Ave. Suite 200
>>Ottawa, Ontario. K1Y 1P4
>>613.565.5056 ext. 24
>>
>>dgadoury at dmsolutions.ca
>>www.dmsolutions.ca
>>
>>
>>_______________________________________________
>>Mapserver-users mailing list
>>Mapserver-users at 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 at dmsolutions.ca
www.dmsolutions.ca