Back

10/ Final bit of #geoweirdness: Polish postal codes consist of five digits, but there is a dash between the 2nd and 3rd digits (example: "12-345"), which is good fun for software that assumes postcodes contain only alphanumeric characters.

https://en.wikipedia.org/wiki/Postal_codes_in_Poland

See our guide to common misconceptions about postal codes:

https://opencagedata.com/guides/how-to-think-about-postcodes-and-geocoding