Postal Codes Are Routing Instructions, Not Geographic Regions

CGP Grey · Explainer · YouTube title: Your Post Code Is the Directions, Not the Destination

Why it's here

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

What it covers

CGP Grey explains that postal codes are routing instructions for mail rather than geographic regions. He looks at the quirks and problems this causes.