Administrative Regions of Greece

Greece has a clear regional map, but many readers mix up regions, regional units, and municipalities. The country is divided into 13 administrative regions, and each one groups together a wider area for planning, transport, public works, public health, civil protection, and other tasks that go beyond one town or city. So when people ask where Athens, Thessaloniki, Crete, or Rhodes sit in the official structure, the answer starts here: with the regions.

How Greece Is Organized

In the current system, Greece uses two levels of local government. Municipalities handle the first level. Regions handle the second. Above them, the state also operates through decentralized administrations, which are not the same thing as the regions themselves.

• Municipality: the local level, where daily civic services are closest to residents.
• Region: the wider level, where planning and coordination cover many municipalities at once.
• Regional Unit: an internal division inside a region, often following older prefecture lines.

Why does that matter? Because the official map of Greece is not just a set of place names. It shapes how territory is managed, how services are coordinated, and how different parts of the country are linked together.

What Makes a Region Different From a Regional Unit

A region is the larger administrative body. A regional unit is a subdivision inside it. Think of the region as the wider map and the regional unit as one of the sections within that map. Small distinction, maybe. Useful one, definitely.

Take Central Macedonia as an example. It is one region, but inside it sit the regional units of Thessaloniki, Imathia, Kilkis, Pella, Pieria, Serres, and Chalkidiki. The same pattern appears across the country, though island regions often feel more scattered because their territory stretches across sea space as well as land.

The 13 Regions of Greece

Attica

Attica is the region of Athens and the country’s largest urban concentration. It includes the Central, Northern, Western, and Southern sectors of Athens, along with Piraeus, Eastern Attica, West Attica, and the regional unit of Islands. In administrative terms, this is the most urban region in Greece, and the whole region functions as a metropolitan region.

Central Macedonia

Central Macedonia has its seat in Thessaloniki and covers a large part of northern Greece. Its regional units are Imathia, Thessaloniki, Kilkis, Pella, Pieria, Serres, and Chalkidiki. Thessaloniki gives the region a strong metropolitan role, while the rest of the region links plains, coast, and inland agricultural areas.

Eastern Macedonia and Thrace

Eastern Macedonia and Thrace, seated in Komotini, includes Drama, Evros, Thasos, Kavala, Xanthi, and Rodopi. It joins mainland territory with the island unit of Thasos, which makes its map more varied than many people expect.

Western Macedonia

Western Macedonia has four regional units: Grevena, Kastoria, Kozani, and Florina. Its seat is Kozani. This is one of the more inland regions of Greece, with a landscape shaped by uplands, basins, lakes, and mountain routes.

Epirus

Epirus is centered on Ioannina and includes Arta, Thesprotia, Ioannina, and Preveza. The region ties together mountain interior and western coast. Compact on the map, yes, but internally quite varied.

Thessaly

Thessaly is seated in Larisa and includes Karditsa, Larisa, Magnesia, Sporades, and Trikala. It blends a broad mainland area with the island unit of Sporades, so the region is not only inland plain as many first-time readers assume.

Mainland Greece (Sterea Ellada)

Mainland Greece, often referred to by its Greek name Sterea Ellada, has its seat in Lamia. Its regional units are Viotia, Evia, Evrytania, Fthiotida, and Fokida. It covers a broad middle section of the country and also includes Evia, one of Greece’s largest islands.

Western Greece

Western Greece is based in Patras and includes Aitoloakarnania, Achaia, and Ilia. With only three regional units, its map looks simpler than most others. Still, it connects very different local settings, from urban Patras to agricultural and coastal zones farther south and east.

Peloponnese

Peloponnese has its seat in Tripoli and is divided into Argolid, Arkadia, Korinthia, Lakonia, and Messinia. It covers much of the peninsula that gives the region its name. Old place names remain familiar here, and many travelers know the area well without realizing how the present administrative map is arranged.

Ionian Islands

Ionian Islands is seated in Corfu and includes Zakynthos, Corfu, Kefallinia, Ithaki, and Lefkada. This is one of Greece’s clearly island-based regions. It sits off the western coast and groups islands that are separate in space but linked in one administrative unit.

North Aegean

North Aegean has its seat in Mytilini and includes Ikaria, Lesvos, Limnos, Samos, and Chios. Its geography is scattered, and that shapes how the region is read on the map. One region, many islands, long sea distances between them.

South Aegean

South Aegean, seated in Ermoupoli, has the largest number of regional units: Andros, Thira, Kalymnos, Karpathos–Heroic Island of Kasos, Kea–Kythnos, Kos, Milos, Mykonos, Naxos, Paros, Rhodes, Syros, and Tinos. This region spreads across much of the Cyclades and Dodecanese. On paper it is one region. In practice, it is a broad island network.

Crete

Crete is a single-island region with its seat in Heraklion. Its regional units are Heraklion, Lasithi, Rethymnon, and Chania. Because the island is large, the region feels self-contained, yet the four-unit division still matters for administration and local coordination.

What Regions Do in Everyday Terms

Regions are not just labels on a map. They operate at a scale that suits issues larger than one municipality. That usually means matters such as:

• regional transport planning
• public works across wider areas
• civil protection coordination
• health-related planning at regional scale
• development planning across many municipalities

That is why Athens is not managed only as a city, and why island groups are not treated as isolated dots. The regional level connects places that need to work together.

Questions People Often Ask

Is Athens a Region?

No. Athens is a municipality inside the Region of Attica. Attica is the region; Athens is one municipality within it.

Are Regions and Regional Units the Same?

No. A region is the larger administrative area. A regional unit is one part of that region. Attica, for example, is one region with eight regional units.

Which Greek Regions Are Mostly Islands?

The most clearly island-based regions are Ionian Islands, North Aegean, and South Aegean. Crete is also island-based, though it is centered on one large island rather than a dispersed island group.

Which Region Includes Thessaloniki?

Thessaloniki belongs to Central Macedonia. It is the seat of that region and its best-known urban center.