On: What is the minimal possible UK address?

[lxgr]

A ZIP code (even just the 5-digit one) should disambiguate all of that though, right?

[1-more → lxgr]

Yeah the city and state can be left off without any loss in precision if you include a ZIP. NYC has tiny ZIP code areas. Famously a few big buildings have their own, such as the Empire State Building (10018). Here's a list:

https://convene.com/catalyst/office/buildings-new-york-city-...