Cinisello Balsamo borders the following municipalities: Monza, Muggiò, Nova Milanese, Paderno Dugnano, Cusano Milanino, Sesto San Giovanni, Bresso.The current comune was formed in 1928 by the union of Cinisello and Balsamo, and received the honorary title of city through a presidential decree on 17 October 1972.Cinisello (from the Latin cinis, "Ashes", through cinixellum, indicating the fertility of the land from the ashen color, but traditional, though not exactly confirmed - even if you have found Roman remains in the area - is the theory that "Cinisello" comes from "Cinis Aelii", "Ash of Aelius", a Roman gens had here, probably, a branch of the Imperial Age) is the western part of the city.In another theory (also not exactly confirmed) resulting from studies done in the Historical Archive of Arms would be that both Cini, both Sello, were ancient and noble Houses from Trentino who settled in the area, providing their names to the same, which were decorated with the title of nobility with special merit achieved for works done in favor of the Fatherland.Balsamo (perhaps "the balsam tree", but it might just be the surname of a noble family and elders of the town in the Middle Ages) is the eastern half.