In this January 2018 report from the Fraser Institute, they pegged the average population density of Paris to be about 21,067 inhabitants per square kilometer (2014 population year). It is the second densest city in their report after Hong Kong, but the densest in Europe. By comparison, Vancouver sits at around 5,493 inhabitants per square kilometer (2016 population year).

Now, these are of course city averages. Some neighborhoods will be higher and some will be lower. According to a January 2018 study by Alasdair Rae -- who is a works in the Department of Urban Studies and Planning at the University of Sheffield -- these are the most densely populated square kilometers across Europe (or at least within the 39 countries that he looked at).

Paris, once again, comes in near the top with a peak density somewhere around 52,218 inhabitants per 1km square. The square in question is in the neighborhood of Goutte D'Or. And the only square within the study to come in denser is one from the L’Hospitalet de Llobegrat in Greater Barcelona (53,119 inhabitants per square kilometer).

Now let's take a look at how these sorts of densities actually manifest themselves. Below is an aerial capture from Google Maps showing a section of Goutte D'Or in Paris. The buildings are all pretty much 7 storeys (mid-rise), but the blocks are mostly filled in. Lots of interior courtyard apartments. This is one way to get to over 50,000 people per square kilometer.

Returning to Vancouver as a point of comparison, below is an aerial capture from downtown Vancouver at exactly the same scale as the Paris capture. I couldn't find a density map of downtown, but it's probably safe to assume that it's greater than 5,493 and a lot less than 52,218 residents per square kilometer.

What you see here is typical Vancouverism. Lots of slender point towers, careful tower positioning and spacing, and generally low podiums. It is a perfect demonstration that height and density do not necessarily correlate. It is possible to have low buildings and high density, which is something that Europe obviously does very well.

But here's the important question: In which of these two examples would you rather live? Please leave a comment below.

As I wrote about last month in this pithy post, the relationship between building height and density are often misunderstood. They mean different things and so the implications for our cities can also be vastly different.

I woke up this morning to a couple of tweets by John Michael McGrath that I think hit the nail on the end with respect to this duality. If you can't see them below, click here.

Paris is known, and largely celebrated, for its "European-scaled" mid-rise buildings. But as John points out, these buildings often line narrow streets (see above). They are typically also built across large blocks with compact internal courtyards and with few setbacks and/or stepbacks. The combined result is that Paris is one of the densest cities in Europe. It has mid-rise at scale.

The North American context is quite different. The large majority of our land is usually reserved for low density housing. (Here in Toronto this land has been nicknamed the "Yellowbelt.") We have a policy context that only allows intensification in select places, and that can create pressures to build up. It's a bit like squeezing a closed tube of toothpaste.

In 2012, Eurostat ranked Paris as the densest city in Europe with an average population density of approximately 21,516 people per square kilometer. Whereas, according to Wikipedia, the population density of metro Toronto was around 5,905 people per square kilometer in 2016.

What is it, again, that we love so much about Paris?

This Planetizen article (2014) by Brent Toderian surfaced over the weekend. It is about tall buildings and why we should be focused more on how they are designed, as opposed to just how tall they are. Brent talks about this in terms of "density done well."

One of the things that is often misunderstood when it comes to tall buildings is the relationship between height and density. It is often assumed that the two are perfectly correlated; but they're not, which is why I like this quote from the above article:

“Height and density have a relationship, one that can be over-simplified or mischaracterized, but they aren’t the same thing - you can have density without height, and yes, you can have height without density.” -Brent Toderian

Part of the challenge is that density is a more nuanced metric. Height, on the other hand, is a lot easier to understand. How tall is this building? Oh, it is x storeys tall. But that's only one piece of the puzzle.

Photo by Erwan Hesry on Unsplash