Good videos, with context.
Your Post Code Is the Directions, Not the Destination

Your Post Code Is the Directions, Not the Destination

CGP Grey
4 HN recommenders · discussed 2025–2025
Open YouTube ↗

About this video

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 it appears in the archive

HN recommends it whenever zip codes, addresses or geospatial data come up, as a clear explanation of the hidden pattern in post codes.

AI-generated summary and labels from the source dataset; verify important details against the video. Source & credits.

From the Hacker News discussion

cogman10 · 2025-09 · strong rec

If you find this interesting and you haven't watched it, Go watch "The hidden pattern in post codes" [1] [1] [VIDEO]

Read original comment ↗
jpjoi · 2025-02 · rec

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: [VIDEO]

Read original comment ↗
schlauerfox · 2025-04 · rec

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. [VIDEO]

Read original comment ↗
Arnavion · 2025-05 · rec

See also this CGP Grey video where he talks about post codes / zip codes in general and mentions Ireland's system. [VIDEO]

Read original comment ↗