Great work again Andrew, many, many thanks. I’m curious what process we could 
use to move forward on this. 

As I understand your message, we have and/or can get population data for a 
small proportion of places in Aus (probably with comprehensive data for most 
larger places and less data for the many smaller ones). This means that, if we 
develop a guideline based primarily on population data we then have to develop 
a simple way to extrapolate the guidelines to places without pop data. Yes?

As a simple starting point, I’m curious whether it’s possible to first try to 
get agreement on general cut-offs for villages/towns/cities etc using only the 
places that have pop data (i.e. those you’ve mapped). We could present some 
different scenarios so that everyone could see the implications of different 
decisions for areas that they know. 

If agreement can be reached on this, we could then try to develop a simple way 
to generate guidelines for places without population data. This might use 
township area as a proxy for population for example (or other features).

The overpass patterns you generated are great to see. I imagined that the OSM 
city/town division might have been based on features like whether a place had a 
hospital etc, as others have suggested. But your analysis suggests that we may 
just have major regional differences in what people consider to be towns vs 
cities. For example, lots of regional centres in Vic have been tagged as cities 
(and are indeed called ‘cities’ in Victoria), whereas many places of similar 
size in other states have been tagged as towns. That points to broad 
social/cultural differences between Victoria and other regions, rather than 
fine detailed factors at individual localities. It’s great to see this big 
picture view.

I’m happy to devote some time to the topic too if others think it’s a useful 
topic to progress. Thanks again, Ian




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