Gregory's Server@Dangerous_beans @xssfox Non-geographic postcodes excepted, Postcodes CAN be mapped to localities. All geographic postcodes fully contain one or more localities, and their boundaries are defined by locality boundaries.
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 @railmaps @Dangerous_beans @xssfox I'm guessing the West Bank has a few postal codes - and with some straight up overlapping. It wouldn't surprise me, given how timezones work there. And taking a quick look - apparently Palestine didn't have postal codes or addressing rules until 2021...and the ones they do have in the West Bank seem to be determined partially on elevation...so them not overlapping would surprise me more. @railmaps @Dangerous_beans @xssfox (I imagine, without checking first, that the same issue applies to Ukraine right now - despite having a whole set of postal codes for the whole country, Russia's invasion likely throws a lot of expected postal code deliveries to be...difficult to process.)*   @Dangerous_beans @xssfox It’s strictly many to one, and has been for 20 years or so. There are two caveats though which may mean technical documents have to permit many to many to cater for a) not all postcodes are geographic - ie they can be allocated to PO boxe suites or large mail receivers and some may want to record their geo location and b) one political exception (Locality of Melbourne has 2 geo postcodes 3000 and 3004) @Dangerous_beans @xssfox Locality is a formally defined construct that represents a geographically bounded area. Localities are maintained by the varies State lands Authorities and they define the address of all land parcels contained within. Australia Post define geographic postcodes in terms of the Localities they serve, and they adopt the boundaries precisely. @railmaps @xssfox ah, it's state level. i can't find a list to check, the free publication on auspost isn't much use here @Dangerous_beans @xssfox It’s possible. Localities come from a lands management and surveying background, not from a stats background. Geoscience Australia do act as a national umbrella group for all the State lands data, and the States do coordinate and standardise pretty well with each other on this. This might be useful https://www.ga.gov.au/scientific-topics/national-location-information/nationalmap @railmaps @Dangerous_beans @xssfox That might be the case in Australia - it definitely isn't in New Zealand. Until very recently localities have never had boundaries, and what boundaries there are form an incredibly complex and inconsistent network of towns, survey districts, settlements, registration districts, native land blocks; with each former province doing its own thing - and this is before even thinking of local authority boundaries. @Daveosaurus @Dangerous_beans @xssfox I believe Australia’s system is much more formally defined than most other countries. And that has been the case really only since maybe the 1990s. |
@Dangerous_beans @xssfox though I think there might be (or once have been) one exception to this - for historical geopolitical reasons.