This is also the problem with some "zero value postcodes", at least in Netherlands[1] – I'm not sure how that works in the US. People just manually fill in "111

This is also the problem with some "zero value postcodes", at least in Netherlands[1] – I'm not sure how that works in the US. People just manually fill in "1111 AA", "1234 AB", etc. and forms blindly accept that – it is a valid postcode after all. People have had their utilities disconnected, have debts ascribed to them, are unable to register for services, etc. [1]: (In Dutch) https://www.vice.com/nl/article/wj8b4x/wonen-op-postcode-1234-ab-is-een-bureaucratische-hel-vol-neppost-en-afsluitingen https://www.vice.com/nl/article/wj8b4x/wonen-op-postcode-123...