# USA zip code.

**URL:** <https://boards.straightdope.com/t/usa-zip-code/809602>\
**Category:** Factual Questions\
**Created:** [February 26, 2018, 2:56pm UTC](https://boards.straightdope.com/t/usa-zip-code/809602 "2018-02-26T14:56:30Z")\
**Posts on this page:** 4\
**Page:** 3

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**Author:** ![Chronos](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/chronos/32/134_2.png) [@Chronos](https://boards.straightdope.com/u/Chronos)\
**Post date:** [February 27, 2018, 3:24pm UTC](https://boards.straightdope.com/t/usa-zip-code/809602/41 "2018-02-27T15:24:23Z")

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Well, technically, that’s still only one state. And one province, and two countries, but that’s a separate matter.

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**Author:** ![Qadgop\_the\_Mercotan](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/qadgop_the_mercotan/32/83_2.png) [@Qadgop\_the\_Mercotan](https://boards.straightdope.com/u/Qadgop_the_Mercotan)\
**Post date:** [February 27, 2018, 10:21pm UTC](https://boards.straightdope.com/t/usa-zip-code/809602/42 "2018-02-27T22:21:37Z")

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> [@Lord\_Feldon](#):
>
> I can’t find anything newer, but in 1994 there were 153 according to [the Census](https://www.census.gov/population/www/documentation/twps0007/twps0007.html):

Thanks for that, it’s interesting there are so many ZIP codes that cross state lines.

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**Author:** ![glowacks](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/glowacks/32/5548_2.png) [@glowacks](https://boards.straightdope.com/u/glowacks)\
**Post date:** [February 28, 2018, 1:42am UTC](https://boards.straightdope.com/t/usa-zip-code/809602/43 "2018-02-28T01:42:36Z")

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The anomaly at the Kentucky bend is likely due to how the definition of the border between the states is defined. It can’t be part of Tennessee, because it’s north of the line that demarcates TN. It can’t be part of Missouri, because it’s on the wrong side of the river. Thus it must be in Kentucky, because that’s the state that has the land on that side of the MS river and north of that parallel, even if it’s not connected by land to the rest of Kentucky…

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**Author:** ![Mr\_Downtown](https://avatars.discourse-cdn.com/v4/letter/m/8e8cbc/32.png) [@Mr\_Downtown](https://boards.straightdope.com/u/Mr_Downtown)\
**Post date:** [February 28, 2018, 5:00am UTC](https://boards.straightdope.com/t/usa-zip-code/809602/44 "2018-02-28T05:00:29Z")

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> [@Qadgop\_the\_Mercotan](#):
>
> 418, covering part of Quebec, CA and a tiny, tiny bit of Maine.

So tiny that no one lives there year-round.

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