According to the latest data from World Population Review, Monaco has the longest life expectancy in the world as of 2023, where locals live to an average age of 87.01 years. Hong Kong, Macau, Japan, Liechtenstein, Switzerland, Singapore, Italy, Vatican City, and South Korea round out the top 10 countries with the longest life expectancy. Spaniards live the longest in Europe, with a life expectancy of 83.1 years.