Culture

How many saunas are there in Finland?

Three million saunas for five and a half million people. The figure is repeated everywhere and has never been measured. Here is why it still holds.

The Suomen Saunat editorial team Published 7 August 2026 6 min read

The short answer

About three million. There is no exact figure, because saunas are not entered in any register. The estimate is built from the housing stock: the number of detached houses, terraced houses, new flats and summer cottages, in nearly all of which a sauna is standard. The ratio says more than the total — roughly one sauna for every two people.

What to know before your first visit

Saunas are not registered anywhere, so no figure is counted; every one is an estimate.
The three-million estimate has stayed stable because it tracks the housing stock.
Finland has about 5.6 million people: roughly one sauna per two inhabitants.
Most are private. Public saunas are a small fraction, and have been growing in cities.

Why there is no exact figure

A sauna does not have to be declared to anyone. It is not a vehicle or a firearm, and it is not counted in the census. A new flat can gain a sauna without producing a statistic, and an old sauna can fall out of use without being removed from anything.

So every figure you see — including the one on this page — is an estimate. That does not make it bad. It makes it an estimate, and an estimate is worth presenting as one.

Where the estimate comes from anyway

The estimate is built from the housing stock. In Finland a sauna is standard in detached and terraced houses and in a large share of new flats, and nearly every summer cottage has its own. Add those groups together and the total runs to millions.^[2]

The method also explains why the number does not move. Housing stock changes slowly, so the three-million order of magnitude has held for decades without anyone going back to check.

And it explains why the figure is always round. Three million is an order of magnitude, not a measurement. If a page tells you the number of saunas to the nearest thousand, it is adding precision that is not in the source.

The interesting number is not the total

Three million is a large number, but it says nothing without a second one. Finland has about 5.6 million inhabitants. So roughly one sauna for every two people — which means a sauna is not a rarity but a room found in most places where people live or take their holidays.^[1]^[2]

That density is what separates Finland from other countries that have saunas. Elsewhere a sauna is usually a fixture of a spa, a gym or a hotel. Here it is part of the home.^[3]

Which is why "which country has the most saunas" is not worth answering with an absolute number. Per head of population Finland is in a class of its own, and that is the only comparison that says anything.

Private, shared and public saunas

The great majority of those three million are private: a sauna in a home or at a summer cottage. You get in by invitation, and they appear in no directory.

The next layer is the housing-company sauna — a shared sauna in the basement or top floor of an apartment block, booked by residents in turn. That is not open to the public either.

The smallest group is public saunas, where anyone can buy a ticket. There are hundreds of them, not millions, and they have been increasing in cities over recent years. Those are what this site lists.