I think what would be useful is a histogram of population densities, or for example a percentile based metric: population density covering 99/95% of population.
The questions that seem to matter, and for which population density is a proxy, are: how crowded does it feel, and how easy is it to get to the socioeconomic advantages of being near other people (infrastructure, commuting, shopping, community sports, faith buildings, pubs, etc.)?