First, they are determined by area. They start with a very large section. As the area becomes more densely populated, a zip code is split into two. The process continues may repeat in a given section several times, and the introduction of a new local post office might have some impact...
2006-08-29 17:24:11
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answer #1
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answered by SirCharles 6
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Whoever has the most ZIP. It's usually pretty apparent, so there's little argument. Let's just leave it at that.
2006-08-29 18:02:24
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answer #2
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answered by Tekguy 3
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usually when there is a new post office built.
2006-08-29 17:05:24
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answer #3
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answered by Anonymous
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From the census I guess.
2006-08-29 17:07:03
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answer #4
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answered by Anonymous
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I don't know for certain, but I think it involves blindfolds and darts.
2006-08-29 17:06:24
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answer #5
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answered by rrrevils 6
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