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Fri, 20 Mar 2009 10:20:17 -0400 |
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On Fri, Mar 20, 2009 at 7:48 AM, Mark J. Reed <[log in to unmask]> wrote:
> But even if you get all the first-three-digit ranges right, it still
> won't work in all cases, because the first three digits are not enough
> in general to uniquely identify a state. Thirty-eight of those ranges
> have ZIP codes in more than one state (e.g. 993xx in both Oregon and
> Washington, 376xx in both Tennessee and Virginia, etc).
In fact, 99362 and 37642 both cross state lines. All together there are 42
five-digit ZIP codes that do likewise.
You'd think with only 50 states and 100,000 ZIP codes they wouldn't have had
to do that. :\
But I guess it was geographically convenient to group certain areas into a
single post office regardless of where the imaginary lines fell on the map.
--
Mark J. Reed <[log in to unmask]>
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