Most of what a visitor experiences on Santorini — the caldera-view hotels, the sunset crowds, the restaurant strips — is built specifically for tourism. It's worth understanding what the island is actually like underneath that, for the roughly 15,000 people who live there year-round.
A population that swells dramatically in summer
Santorini's permanent population is modest, but the island can host several times that number simultaneously at the height of summer between tourists and seasonal workers. This creates real strain on infrastructure — see our water supply guide for one concrete example — and shapes almost every part of the local economy around a short, intense season.
An economy built on a few months
Tourism dominates the island's economy so completely that many businesses make the bulk of their annual income between May and September, then close or scale back drastically for the rest of the year — see our best time to visit guide for how dramatically the island's character shifts by season. This creates a genuinely different working life than a year-round economy — intense, high-earning summers, and quiet, lower-income winters for many residents.
Housing and cost of living pressure
The same caldera-view demand that drives hotel prices has pushed housing costs for residents upward too, a pattern common to popular tourist destinations worldwide — many people who work on the island commute from more affordable areas or share housing during peak season specifically because of this pressure.
Where locals actually live
Away from the caldera rim — inland villages like Messaria, Karterados, Emporio and Pyrgos (see our respective village guides) have a much higher proportion of year-round local residents than Oia or central Fira, which skew heavily toward tourism infrastructure and second homes/rentals.
Why this is worth knowing as a visitor
It's not meant to discourage a visit — tourism is also the island's economic lifeline, not simply an imposition on it. But understanding that you're visiting a place with a real, separate local life underneath the postcard version tends to make for a more thoughtful visit — see our etiquette guide for how that translates into specific behaviour.
Spotted something out of date, or have a correction? Let us know — we'd rather fix it fast than leave it wrong.