I'm looking for urban area polygon data, preferably worldwide, for a scale level between say 1:500k and 1:1M. I know various national mapping agencies have dataset but there doesn't seem to be anything worldwide. OpenStreetMap is rather spotty in this regard, otherwise I would have preferred to use that.

The intended goal is a series of maps of the major urban areas in the world. Ultimately I'd be happy to digitize them myself but if there is data available I'd of course prefer to use that.


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