Han wrote:

Doesn't zip+4 get you down to the street, rather than an area somewhere
with 100's of streets? That should get you into a database with salestax
rates.

Yes.

http://en.wikipedia.org/wiki/Delivery_point

--

"I don't like to discriminate against terrorists based on nationality.
If you declare war on the United States and you want to kill us,
We're going to kill you first, period."

October 19, 2011 - Ali Soufan (Colbert Report)