Greece is home to the two most tourism-saturated regions in the European Union, with the South Aegean ranking first and the Ionian Islands second, according to new Eurostat data.
The scale becomes clearer in the raw numbers. In 2024, tourists spent more than 41.5 million nights in accommodation across the South Aegean, a region with a permanent population of about 326,000 people.
Put simply, that works out to 127.2 tourist overnight stays for every person who lives there.
A tourist staying for seven nights counts as seven tourist nights. The figure compares all the nights spent by visitors over the course of the year with the number of people who permanently live in the region.
The South Aegean encompasses the Cyclades and Dodecanese, including Rhodes, Kos, Santorini, Mykonos, Paros and Naxos, destinations where relatively small permanent populations accommodate millions of visitors each year.
The Ionian Islands ranked second, with 102.6 tourist nights per resident. The region, which includes Corfu, Zakynthos and Kefalonia, recorded approximately 20.5 million overnight stays against a permanent population of around 200,000.
No other EU region came particularly close.
Italy’s province of Bolzano, which includes much of the Dolomites, ranked third with 68.9 tourist nights per resident. Croatia’s Adriatic coast followed with 67.5, while Spain’s Balearic Islands, including Mallorca and Ibiza, recorded 60.
Crete placed sixth with 55.6 tourist nights per resident, meaning Greece had three regions among the EU’s most tourism-intensive destinations.
The contrast with much of Europe is considerable. Most EU regions recorded fewer than 15 tourist nights per resident.
Greece’s North Aegean, by comparison, recorded 14.9 and still ranked 24th.
At the opposite end of the scale, the Mazowieckie region surrounding Warsaw recorded just 0.7 tourist nights per resident, while Mayotte, the French territory in the Indian Ocean, recorded 0.5.
The figures offer a different way of looking at the extraordinary concentration of tourism in some of Greece’s island regions.
Rather than simply counting arrivals, the measure compares the volume of overnight tourism with the size of the population that lives there year-round. On an island with a relatively small resident population, millions of hotel and accommodation nights can therefore produce a remarkably high ratio.
The effect is particularly pronounced in Greece because tourism is also heavily concentrated in the summer months.
European Commission research has previously found Greece to have one of the most seasonal tourism markets in Europe, with a large proportion of annual overnight stays concentrated within the three busiest months.
That matters on islands where water supplies, transport networks, waste services, housing and other infrastructure must cope with populations that can swell dramatically during the summer.
The ranking should not necessarily be read as a list of Europe’s most overtouristed destinations. Tourism saturation measures the intensity of overnight stays compared with the resident population. Whether that level of tourism becomes unsustainable depends on factors including infrastructure, accommodation capacity, geography and the way visitor numbers are distributed throughout the year.
For Greece, the economic importance of those visitors is difficult to overstate.
The South Aegean remains one of the country’s most valuable tourism regions, driven by destinations ranging from Rhodes and Kos to the Cycladic islands. Greece as a whole has continued to post record or near-record levels of international tourism, reinforcing the sector’s central role in the national economy.
But the latest figures reveal just how unevenly that success is distributed.
In parts of the Aegean and Ionian seas, the relationship between visitor numbers and permanent population is unlike almost anywhere else in Europe. And in the South Aegean, 41.5 million tourist nights shared across a region of just 326,000 residents puts that imbalance into unusually clear perspective.
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