Inspired by Bill Rankin's "Chicago Boundaries", and having finally obtained a copy of the small-area data from Census 2011, I decided to draw some similar dot-maps showing how the population is distributed in South African cities. The primary lesson from these is that the legacy of apartheid is still very clearly visible. I suppose that was to be expected.
In each map, one dot represents 50 people. Here's Cape Town (with all of these, click for a full-size version):