> And then there's the problem of zip codes crossing county lines. I have > this situation currently. On every database I've ever checked, putting > in my zip code comes up with "Houston, Harris County" when I live in > Fort Bend County. I'm not technically in any city, but the post office > uses "Houston" as a convenience. They also cross state lines once in a great while. An example is Texarkana TX and Texarkana AK. The post office says that county/state uniqueness is only guaranteed with the first SEVEN digits of the NINE digit ZIP-Plus-4.

"Tom of Bunyon" <t2jr@bellsouth.net> wrote in message news:c9n28.22762$Ee7.1733679@e3500-atl1.usenetserver.com... > They also cross state lines once in a great while. An example is Texarkana > TX and Texarkana AK. The post office says that county/state uniqueness is > only guaranteed with the first SEVEN digits of the NINE digit ZIP-Plus-4. If there were any, the folks in Texarkana, Alaska would be glad for the clarification. But don't try to send mail there. The post office state code for Arkansas is AR.