Life expectancy is the single most compressed indicator of how a society is doing — it bundles healthcare, wealth, diet, safety and environment into one number. The 2024 ranking shows the world's longevity elite separated by remarkably small margins.

Monaco's outlier status

Monaco leads the world at 87.0 years — nearly three full years ahead of second-placed Japan. The principality is a special case: a tiny, extremely wealthy population with universal access to high-end healthcare, Mediterranean climate and diet, and demographics skewed toward affluent residents. It is less a model other countries can copy than a demonstration of what maximum resources per person can buy.

Japan and Singapore: longevity at scale

Japan (84.3 years) and Singapore (84.0) are the more instructive stories, because they achieve near-Monaco numbers with populations of millions, not thousands. Japan's formula — a fish- and vegetable-heavy diet, universal healthcare, low obesity and strong social cohesion among the elderly — has made it the textbook case for healthy aging. Singapore pairs efficient universal healthcare with some of the world's best preventive medicine.

The European cluster

Switzerland (83.8), Spain (83.4), Iceland (83.3) and Italy (83.2) sit within a single year of each other. Two things stand out. First, the Mediterranean diet countries — Spain and Italy — rank among the top despite having lower GDP per capita than Switzerland or Iceland, a hint that lifestyle can substitute for some measure of wealth. Second, all four share universal healthcare systems, which appears to be the non-negotiable entry ticket to this list.

Australia rounds out the leaders

Australia (83.5 years) is the only country outside Europe and Asia in the top group — combining high income, an outdoor culture and a strong public health system (and some of the world's strictest anti-smoking policies).

The takeaway

No single trick gets a country onto this list. But the leaders share a recognizable recipe: universal healthcare, low smoking rates, healthy diets and high income. The differences between them — barely four years from Italy to Monaco — are small. The gap between this group and the countries at the bottom of the global table, which can exceed 25 years, is where the real story of global health inequality lives.

See the interactive chart: Countries by Life Expectancy 2024.