The traditional geographic regions of Greece (Greek: γεωγραφικά διαμερίσματα, lit. 'geographic departments') are the country's main historical-geographic regions, and were also official administrative regional subdivisions of Greece until the 1987 administrative reform. Despite their replacement as first-level administrative units by only partly identical administrative regions (Greek: περιφέρειες), the nine traditional geographic regions—six on the mainland and three island groups—are still widely referred to in unofficial contexts and in daily discourse.
As of 2011[update], the official administrative divisions of Greece consist of 13 regions (Greek: περιφέρειες)—nine on the mainland and four island groups—which are further subdivided into 74 regional units and 325 municipalities. Formerly, there were also 54 prefectures or prefectural-level administrations.
|Geographic region||Post-1987 administrative region(s)||Map|
|Aegean Islands||split into North Aegean, South Aegean|
|Central Greece||split into Attica, Central Greece, part of Western Greece|
|Ionian Islands||identical, apart from Kythira, which became part of Attica|
|Macedonia||split into Western Macedonia, Central Macedonia, part of East Macedonia and Thrace|
|Peloponnese||split into Peloponnese, part of Western Greece|
|Thrace||merged into East Macedonia and Thrace|
- ^ Π.Δ. 51/87 "Καθορισμός των Περιφερειών της Χώρας για το σχεδιασμό κ.λ.π. της Περιφερειακής Ανάπτυξης" (Determination of the Regions of the Country for the planning etc. of regional development, ΦΕΚ A 26/06.03.1987
- ^ In Macedonia there is one autonomous region, Mount Athos (Ayion Oros, or "Holy Mountain"), a monastic state under Greek sovereignty. It is located on the easternmost of the three large peninsulas jutting into the Aegean from the Macedonian mainland.