“If you find this interesting and you haven't watched it, Go watch”
Hidden pattern in post codes
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If you find this interesting and you haven't watched it, Go watch "The hidden pattern in post codes" [1] [1] this video
Your Post Code Is the Directions, Not the Destination
3.9M views · Jan 28, 2025 · 7:49 · 4 HN recommenders · 4 mentions · discussed 2025
CGP Grey explains that postal codes are routing instructions for mail rather than geographic regions. He looks at the quirks and problems this causes.
Why Hacker News points people here: HN recommends it whenever zip codes, addresses or geospatial data come up, as a clear explanation of the hidden pattern in post codes.
“If you find this interesting and you haven't watched it, Go watch”HN comment, 2025
What Hacker News said 4
“CGP Grey has a great video on this”
Why postal codes reflect infrastructure, not geography
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Zip codes are just weird to use for anything other than mail in general because they’re set up based off infrastructure. CGP Grey has a great video on this: this video
“CGP Grey, a youtube channel, has a video on some of the problems of the postal codes and addresses”
Problems with postal codes and alternative systems
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CGP Grey, a youtube channel, has a video on some of the problems of the postal codes and addresses from earlier this year that I learned about alternates to my familiar US based system. this video
“See also this CGP Grey video where he talks about post codes / zip codes in general”
Postal codes in general, including Ireland's system
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See also this CGP Grey video where he talks about post codes / zip codes in general and mentions Ireland's system. this video