Greece Administrative Divisions

Greece is divided into 13 regions (Περιφέρειες) and 1 autonomous area (Χερσόνησος του Άθω), which form the top-level administrative units. These are subdivided into 75 regional units (Περιφερειακές ενότητες). The smallest administrative level consists of 333 municipalities (Δήμοι). Major regions include Attica, Central Greece, and Central Macedonia.

Greece has 3 administrative levels. Level 1: 13 regions (Περιφέρειες) and 1 autonomous area (Χερσόνησος του Άθω). Level 2: 75 regional units (Περιφερειακές ενότητες). Level 3: 333 municipalities (Δήμοι).

Greece operates on a three-level system starting with 13 regions at the top level, followed by regional units, and municipalities as the smallest administrative units. There is also Mount Athos, which is sometimes counted as a fourteenth region, but it is an autonomous area with its own self-governance and is not part of the standard regional system.

In Greece, regions and autonomous areas both sit at administrative level 1 but serve different functions. Regions (περιφέρειες) — there are 13 — typically group multiple smaller municipalities under a shared administration. Autonomous area (χερσόνησος του άθω) — there is 1 — is a larger city or urban area that handles its own administration independently.

Greek administrative divisions have specific local names at each level. In Greek, regions are called Περιφέρειες; autonomous areas are called Χερσόνησος του Άθω; regional units are called Περιφερειακές ενότητες; municipalities are called Δήμοι. These local-language terms appear in official documents, legal records, and government databases, so matching them correctly is important for data integration and compliance.

Administrative boundaries in Greece change as governments reorganize regions, merge municipalities, or create new administrative units to reflect population shifts and political decisions. Changes most commonly affect the municipalities level, where Greece currently has 333 units. Businesses that rely on Greek administrative data should use a regularly updated reference dataset to avoid mismatches in geocoding, tax jurisdiction mapping, and compliance reporting.