The traditional geographic regions of Greece () are the country's main historical-geographic regions, and were also official administrative regional subdivisions of Greece until the 1987 administrative reform.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 Despite their replacement as first-level administrative units by only partly identical administrative regions (), 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 ()—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.

The largest of the geographical regions in size is Macedonia and the largest in population is Central Greece. The Ionian Islands are the smallest in both size and population.

+ Geographic regionLand area (% of total)Population 2021 (% of total)Largest city Post-1987 administrative region(s) Aegean Islands 9,165 km² (6.9%)522,763 (5.0%)Rhodes split into North Aegean, South Aegean Central Greece24,107 km² (18.3%) 4,495,920 (42.9%)Athens split into Attica, Central Greece, part of Western Greece Crete8,341 km² (6.3%)624,408 (6.0%)Heraklion identical Epirus9,160 km² (6.9%)319,991 (3.1%)Ioannina identical Ionian Islands2,604 km² (2.0%)208,176 (2.0%)Corfu identical, apart from Kythira, which became part of Attica Macedonia34,213 km² (25.9%)2,266,206 (21.6%)Thessaloniki split into Western Macedonia, Central Macedonia, part of East Macedonia and Thrace Peloponnese21,782 km² (16.5%)1,010,509 (9.6%)Patras split into Peloponnese, part of Western Greece Thessaly14,051 km² (10.6%)688,255 (6.6%)Larissa identical Thrace8,594 km² (6.5%)346,259 (3.3%)Alexandroupolis merged into East Macedonia and Thrace

See also Regions of ancient Greece

Notes

References

de:Griechenland#Politische Gliederung