What country has the longest lifespan?

Where Do People Live the Longest?

Monaco tops the list as the country with the longest lifespan, boasting an impressive average life expectancy of 86.5 years. Nestled along the French Riviera, this tiny principality is home to a wealthy, health-conscious population with access to top-tier healthcare and a Mediterranean lifestyle rich in fresh food, physical activity, and low stress.

But Monaco isn’t alone in fostering long lives. Just behind it are places like San Marino (85.8 years) and Hong Kong (85.6 years), both known for strong social systems, clean environments, and cultural habits that support longevity. Japan, long celebrated for its centenarians, still ranks among the leaders at 84.8 years, thanks to a diet high in fish, vegetables, and mindful eating practices like “hara hachi bu” — eating until 80% full.

South Korea has surged in recent years, now averaging 84.4 years, driven by excellent public healthcare, low smoking rates, and a diet rich in fermented foods like kimchi. Interestingly, several smaller territories appear high on the list — Saint Barthelemy, French Polynesia — suggesting that island living, with its emphasis on community, movement, and natural rhythms, may play a role.

While wealth and healthcare systems certainly contribute, researchers point to deeper patterns: strong social ties, daily physical activity, and diets centered on whole, unprocessed foods. These factors, more than any single miracle, seem to be the real secrets behind the world’s longest-lived populations.

So is it money, medicine, or lifestyle? The answer appears to be a mix — but one thing is clear: living long isn't just about where you are, but how you live.