Even in the USA, the full 9-digit "Zip + 4" code will often identify a specific building. And some really big customers (e.g. the IRS) will have their own 5-digit zip code.

Even in the USA, the full 9-digit "Zip + 4" code will often identify a specific building.

It can be even more granular than that. ZIP+4+2 is a thing.

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