Montbrison is a commune of the Loire département, in France. The commune (in French: commune, word appeared in the 12th century, from Medieval Latin communia, gathering of people sharing a common life, from Latin communis, things held in common) is the lowest level of administrative division in the French Republic. ... Loire is a département in the east-central part of France occupying the Loire Rivers upper reaches. ... The départements (or departments) are administrative units of France and many former French colonies, roughly analogous to British counties. ...