Adrian Frith has done a really nice job looking at the racial segregation of South Africa. It is interesting to see the distribution across the country. It is also interesting to note that the Indian or Asian population is spread through out the county and not concentrated in a few locations. I also find it interesting how racial divided the country is between coloured (defined in the South African 2011 Census) and black African (also defined in the Census).
Zoomable dot-distribution map of South Africa’s population by race