[Talk-us] [Imports] Zipcode Import

Paul Johnson baloo at ursamundi.org
Mon Dec 21 20:19:30 GMT 2009


Matthias Julius wrote:

> Paul Johnson <baloo at ursamundi.org> writes:
>
>> Nobody uses the ZIP codes except the post office.  Truckers
>> certainly don't use 'em, it's easier to look up the state, city, and
>> street in that order.
>
> Many businesses offer to search for local branches by ZIP code.
> Businesses calculate shipping costs based on your ZIP code.  Google
> maps and friends display ZIP codes.  ZIP codes are also a tool for
> consistency checking.  All these uses have nothing to do with the post
> office.

And all of them break in the Portland because the post office regularly
changes the local zipcodes.  For example, 97006 has been on a westward
shift continuously all decade.  97008 has been moving north.

Using ZIP for geolocation considered harmful.






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