It ll seems a bit hit and miss in most countries. Currently the UK has only two small cities in PG, while Oz has six, all smaller ones, like my hometown, Hobart (although not all of it). The US has by far the most rendered cities, probably because of the large user base and being MS home country. Some European countries do well, some don’t, Switzerland has only one PG city.
Here’s a link to the original list of rendered cities in FS.