Carmagnola borders the following municipalities: Poirino, Villastellone, Carignano, Lombriasco, Ceresole d'Alba, Racconigi, Sommariva del Bosco, Caramagna Piemonte.

In this period (1637–1642), the three main subdivisions were razed to the ground as they were conflicting with the defence structures, and immediately re-built around 1.5 km from their original position, where they still are at the present time.

While its defence buildings were being demolished and its strategic role was progressively decreasing in importance, the town could finally develop agriculture and commerce, mainly of hemp and ropes, which were exported in great quantity to Liguria and southern France.

The characteristic of both agricultural and commercial site remained important until after World War II, which caused a massive immigration and a rapid urbanistic expansion.

The name of La Carmagnole, the title of a French song and dance made popular during the French Revolution, is considered to be indirectly derived from the Italian town - i.e., the customary costume of the Piedmontese peasants living near and around Carmagnola was named for the town; when some of these peasants came to Paris, their dress influenced the popular short jacket worn by working-class militant sans-culottes, who sang the song.