From Stamps of the World
The Republic of Peru is divided into 25 regions and the province of Lima. Since its 1821 independence, Peru had been divided into Departments (Spanish: Departamentos). Under a new arrangement in 2002 (Spanish: Ley Orgánica de Gobiernos Regionales), the former 24 departments plus the Callao Province have become regional circumscriptions. The province of Lima has been excluded from this process. Unlike the earlier departments, regions have an elected government and have a wide array of responsibilities within their jurisdiction. Regions and departments are subdivided into provinces and districts.