On 8/30/13 6:12 PM, John F. Eldredge wrote:
You may want to double-check with the Post Office, to find out whether
there is the possibility that there may legitimately be outliers in
some cases. I don't think the US Post Office guarantees that zip codes
will always define a single polygon with no outliers.
they absolutely do not guarantee anything of the sort. zip codes represent
delivery routes, not polygons. they can frequently be represented as
polygons,
but there are definitely legitimate outliers.
richard
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