Of all the major ethnic groups making up metropolitan Miami's population, Cubans have pride of place, not only because of their demographic dominance, but also because they played a pivotal role in the area's economic and social transformation. However, beginning in the 1980s, things took a rather different turn for the Cuban population of the United States. By 2010, its average income had descended below that of other Latin American groups and its poverty rate exceeded by a significant margin the national average. This chapter discusses how the Cuban population of Miami became divided into two distinct blocs: older Cubans, the creators of the business enclave and their American-born children, on the one hand, and Mariel and post-Mariel arrivals and their offspring, on the other. Like all urban phenomena, this bifurcation had a spatial dimension. This bifurcation also took place silently and without major confrontations between the two Cuban communities.