This is an interesting map of population density in the UK (from 2011): http://www.ons.gov.uk/ons/interactive/census-map-2-1---pop-density/index.html http://www

This is an interesting map of population density in the UK (from 2011): http://www.ons.gov.uk/ons/interactive/census-map-2-1---pop-density/index.html http://www.ons.gov.uk/ons/interactive/census-map-2-1---pop-d...) A quick search didn't turn up anything with a decent resolution that covered Europe/the rest of the world at the same time (seemed mainly to be on a per-country basis).