The traditional geographic regions of Greece (el|γεωγραφικά διαμερίσματα||geographic departments) are the country's main historical-geographic regions, and were also official administrative regional subdivisions of Greece until the 1987 administrative reform.[1] Despite their replacement as first-level administrative units by only partly identical administrative regions (el|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.
, the official administrative divisions of Greece consist of 13 regions (el|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.
| split into North Aegean, South Aegean | ||
| Central Greece | split into Attica, Central Greece, part of Western Greece | |
| Crete | identical | |
| Epirus | identical | |
| Ionian Islands | identical, apart from Kythira, which became part of Attica | |
| Macedonia[2] | split into Western Macedonia, Central Macedonia, part of East Macedonia and Thrace | |
| Peloponnese | split into Peloponnese, part of Western Greece | |
| Thessaly | identical | |
| Thrace | merged into East Macedonia and Thrace |