The article analyzes three forms of urban segregation in the novel Poncia Vicencio (2003), by Conceicao Evaristo: in favelas, prisons and prostitution zones. It is argued that this segregation is not only social but also ethno-racial and moral. In the stories of three characters who move from the countryside to the big city Poncia and Bilisa in search of better conditions of life, and Luandi in search of his sister - the segregations become evident and dialogue with the ideas of Celia Maria Azevedo (1987), Luiza Bairros (1995, 2000), Such Carneiro (2001), Vera Malaguti Batista (2004), Marilena Chaui (2008), among others. Thus, we can see the social and urban segregation of groups such as prostitutes, like Bilisa, restricted to the prostitution zones, or the black men imprisoned in the police station where Luandi works, as well as the maids that, like Poncia, descend the slum or walk across the city to get to the house of their employers. In conclusion, Conceicao Evaristo denounces, in Ponciti Vicencio, a spacial hierarchy in the cities and a continuity of the racist logic of the colonial period after the slavery abolition, at the same time that she creates strong and complex characters that strain these borders.