In this article, Matt Forrest makes his case for why zip codes are bad for accurate spatial analysis and insight. He delves into the history of the zip code and its quirks — for example that the codes aren’t attached to a geographic area, and that they can overlap, which I didn’t know. He ends the article with suggestions for multiple other methods to use instead of the zip code.

Stop Using Zip Codes for Geospatial Analysis
The last time you used your zip code, you were most likely entering your address into a website to make a purchase, finding a store near your home or office, or filling out...