The departments (Spanish: departamentos), informally called regions (Spanish: regiones), are the first-level administrative subdivisions of Peru. According to the Organic Law of Regional Governments, each department is administered by a regional government and a legislature responsible for administration, economic planning, and public services. These governments operate with autonomy while still coordinating with national authorities. Each department is led by a regional governor, who is elected by popular vote for a four-year term, and is responsible for implementing regional policies, managing budgets, and overseeing infrastructure projects. The governor is supported by a regional legislative council, composed of elected representatives from different provinces within the department. This council approves budgets, monitors public investments, and ensures government accountability.
There are 24 departments in total, as well as two provinces that operate under a special regime: Callao and Lima. The former does not belong to any department since 1836, but is nevertheless administered by a regional government of its own. The latter is administered by the Metropolitan Municipality of Lima, which is equal in status to a regional government.