Picture your local high school. Now imagine that everyone in it — students, teachers, the janitor, the principal — is an entire country. Sounds strange, right? But that is basically true for a few real countries on Earth today.
While China and India each hold more than a billion people, a small group of nations have populations you could fit into a single football stadium. Some don't even fill a stadium. Here is a simple look at the ten countries with the smallest populations in the world, and the story behind why they stayed so small.
The 10 smallest countries by population
| Rank | Country | Roughly how many people | Where it is | |---|---|---|---| | 1 | Vatican City | About 500–800 | Inside Rome, Italy | | 2 | Tuvalu | About 11,000 | South Pacific Ocean | | 3 | Nauru | About 12,000 | South Pacific Ocean | | 4 | Palau | About 18,000 | Western Pacific Ocean | | 5 | San Marino | About 34,000 | Surrounded by Italy | | 6 | Liechtenstein | About 39,000 | Between Switzerland and Austria | | 7 | Monaco | About 39,000 | French Riviera, Europe | | 8 | Marshall Islands | About 40,000 | Pacific Ocean | | 9 | Saint Kitts and Nevis | About 47,000 | Caribbean Sea | | 10 | Dominica | About 73,000 | Caribbean Sea |
Numbers move around a little depending on the year and who is counting, but the order stays roughly the same.
Vatican City: smaller than most apartment buildings
Vatican City sits inside the city of Rome and is the smallest country in the world, both in size and in people. It is home to fewer than a thousand people, and most of them are priests, nuns, or the Swiss Guards who protect the Pope. You could fit the entire population inside one large apartment block. There is no farming, no births recorded most years, and almost everyone who lives there works for the Church in some way.
Tuvalu and Nauru: tiny islands with a big problem
Funafuti Atoll, the capital of Tuvalu, seen from above. Photo: Wikimedia Commons.
Tuvalu is made up of nine small coral islands in the Pacific Ocean, with a total land area smaller than most city parks. Around 11,000 people live there, and the highest point in the whole country is only a few meters above sea level. That makes Tuvalu one of the places most at risk from rising oceans caused by climate change.
Nauru, its neighbor, tells a similar story. It's a single small island, and for a while it was one of the richest countries per person on Earth because of phosphate mining. Once the phosphate ran out, things got harder, but around 12,000 people still call it home today.
Palau: small population, giant ocean protection
Palau has around 18,000 people spread across hundreds of islands, though only a handful of them are actually lived on. Despite its tiny size, Palau made history by creating one of the world's first shark sanctuaries and asking every visitor to sign a pledge to protect its environment before they're even allowed to enter the country.
San Marino, Liechtenstein, and Monaco: Europe's pocket-sized nations
These three are proof that you don't need millions of people to be a wealthy, independent country. San Marino sits on a mountainside completely surrounded by Italy and calls itself the world's oldest surviving republic — it even has more registered cars than people. Liechtenstein, tucked between Switzerland and Austria, is one of the richest countries per person on the planet. Monaco, famous for its casinos and Formula 1 race, is so packed with wealthy residents that it's also one of the most densely populated places on Earth, even with a population of under 40,000.
Marshall Islands, Saint Kitts and Nevis, and Dominica
Rounding out the list are three island nations. The Marshall Islands, scattered across the Pacific, has seen its population shrink in recent years as many residents move to the United States for work and education. Saint Kitts and Nevis, in the Caribbean, is actually the smallest country in the Americas by both size and population. Dominica, also in the Caribbean, is nicknamed the "Nature Island" for its rainforests, hot springs, and volcanoes.
Why do these countries stay so small?
A few patterns show up again and again on this list:
- Not much land to begin with. Vatican City, Monaco, and Nauru are simply tiny, so there's a natural limit on how many people can live there.
- Remote islands. Tuvalu, Palau, and the Marshall Islands are far from everywhere else, which keeps populations low.
- People move away. Some islands lose residents each year to bigger countries that offer more jobs or safer ground as sea levels rise.
- Special rules about who counts as a citizen. Places like Vatican City only count people connected to the Church, which keeps the number artificially small.
Small countries, big influence
Here's the surprising part: having a tiny population doesn't stop a country from mattering. Tuvalu has become one of the loudest voices at United Nations climate talks, even though almost no one has heard of it. Monaco and Liechtenstein punch far above their weight in global finance. And San Marino has been governing itself since long before most of today's superpowers even existed.
So the next time someone tells you that size determines importance, you can point them to a mountaintop republic smaller than most college campuses that has quietly run itself for over 1,700 years.
Sources: United Nations World Population Prospects, Worldometer