Comment by alskdfqlkj

That's not really true. Paris (intra-muros) has ~53,000 people per square mile[1] which is quite high. Manhattan is a fair bit denser at ~74,000 per square mile[2] but NYC's next densest borough of Brooklyn has only ~39,000[3]. And nothing else in the US comes anywhere close; the next densest city is SF which only hits ~18,000[4]

Even if you go beyond the city proper, a number of the Paris banlieues are similarly dense and I think most of the most populous ones are like twice as dense as SF (which, again, is America's second-densest city).

[1] https://en.wikipedia.org/wiki/List_of_cities_proper_by_popul... [2] https://en.wikipedia.org/wiki/Manhattan [3] https://en.wikipedia.org/wiki/Brooklyn [4] https://en.wikipedia.org/wiki/San_Francisco