(click here to enlarge)
This is a map of Rocinha’s evolution in terms of territorial occupation, from the 1940s til 2005.
A note on the yellow section. “From 1950 to 1960 alone, the favela’s growth spiked, showing a populational increase of 228% (from 4,513 to 14,793 inhabitants), with a housing increase of 912% (from 307 to 3,017).” – Source: União Pró-Melhoramentos dos Moradores da Rocinha, 1983
Upon checking those percentages against the numbers, they don’t seem to add up exactly, but close enough. It’s also important to understand that any census on Rocinha’s population should be treated with suspicion due to the huge difference between official and unofficial populational estimates. The graphic above just deals in land occupation and thus it can perhaps be more easily verified.
Other sites confirm the residential explosion,
“Rocinha’s fastest growth occurred during the 1950s and 1960s; largely influenced by the destruction of several nearby favelas, the continuation of the rural to urban exodus, and the real-estate boom in the surrounding upper-class neighbourhoods.” – Source