Whenever the question arises about which country is the wealthiest in the world, most people immediately think of the United States. But here’s what few realize: there are several much smaller nations in population that surpass the U.S. when it comes to GDP per capita.

Luxembourg leads by a wide margin with an impressive GDP per capita of $154,910, while the U.S. ranks only 10th with $89,680. That’s a significant difference. Singapore comes right behind with $153,610, followed by Macau with $140,250. Ireland, Qatar, Norway, Switzerland, Brunei, and Guyana complete the top 10.

What catches my attention is how these countries got there through very different paths. Luxembourg, Singapore, and Switzerland built their wealth through strong financial and banking services. Qatar and Norway leveraged their vast natural resources—oil and gas—to amass wealth. Guyana is a more recent and interesting case: it discovered offshore oil fields in 2015, which completely transformed its economy.

But which country is truly the wealthiest in the world and offers the best quality of life? That’s where it gets complicated. GDP per capita doesn’t tell the whole story because it ignores income inequality. In the U.S., for example, despite the giant economy, there is one of the highest income disparities among developed countries. The gap between the rich and the poor continues to grow.

Luxembourg stands out not only for its wealth but also for its strong social welfare system—social spending accounts for about 20% of GDP. Singapore impresses with its clean governance and business-friendly environment that has attracted massive global investments. Switzerland? Besides being wealthy, it has been a leader in global innovation since 2015.

The interesting thing is that this ranking of the wealthiest country in the world can vary depending on how you measure it. If it were by total nominal GDP, the U.S. would still dominate. But by average income per person, these small nations easily outpace others. Each has its own strategy: some bet on finance, others on natural resources, and some on innovation and technology.

In the end, a country’s wealth isn’t just about numbers. It’s about how the government manages resources, invests in education and health, and creates an environment where businesses and people thrive. Luxembourg, Singapore, and Switzerland understood this much better than many others.