From the mid-19th century until today, life expectancy at birth in the United States has roughly doubled, from 39.4 years in 1850 to 79.6 years in 2025. It is estimated that life expectancy in the U.S. began its upward trajectory in the 1880s, largely driven by the decline in infant and child mortality through factors such as vaccination programs, antibiotics, and other healthcare advancements. Improved food security and access to clean water, as well as general increases in living standards (such as better housing, education, and increased safety) also contributed to a rise in life expectancy across all age brackets. There were notable dips in life expectancy; with an eight year drop during the American Civil War in the 1860s, a seven year drop during the Spanish Flu empidemic in 1918, and a 2.5 year drop during the Covid-19 pandemic. There were also notable plateaus (and minor decreases) not due to major historical events, such as that of the 2010s, which has been attributed to a combination of factors such as unhealthy lifestyles, poor access to healthcare, poverty, and increased suicide rates, among others. However, despite the rate of progress slowing since the 1950s, most decades do see a general increase in the long term, and current UN projections predict that life expectancy at birth in the U.S. will increase by another nine years before the end of the century.

Historical dataset showing U.S. life expectancy by year from 1950 to 2025.

Japan had the highest life expectancy at birth of the G7 countries between 2000 and 2025, reaching **. On the other hand, life expectancy in the United States was ***** years, the only one of the seven where it was below 80. Life expectancy dropped in all G7 countries following the COVID-19 pandemic.

Life expectancy at birth, female (years) in United States was reported at 81.1 years in 2023, according to the World Bank collection of development indicators, compiled from officially recognized sources. United States - Life expectancy at birth, female (years) - actual values, historical data, forecasts and projections were sourced from the World Bank on September of 2025.

Historical dataset showing North America life expectancy by year from 1950 to 2025.

In 2024, the average life expectancy in the world was 71 years for men and 76 years for women. The lowest life expectancies were found in Africa, while Oceania and Europe had the highest. What is life expectancy?Life expectancy is defined as a statistical measure of how long a person may live, based on demographic factors such as gender, current age, and most importantly the year of their birth. The most commonly used measure of life expectancy is life expectancy at birth or at age zero. The calculation is based on the assumption that mortality rates at each age were to remain constant in the future. Life expectancy has changed drastically over time, especially during the past 200 years. In the early 20th century, the average life expectancy at birth in the developed world stood at 31 years. It has grown to an average of 70 and 75 years for males and females respectively, and is expected to keep on growing with advances in medical treatment and living standards continuing. Highest and lowest life expectancy worldwide Life expectancy still varies greatly between different regions and countries of the world. The biggest impact on life expectancy is the quality of public health, medical care, and diet. As of 2022, the countries with the highest life expectancy were Japan, Liechtenstein, Switzerland, and Australia, all at 84–83 years. Most of the countries with the lowest life expectancy are mostly African countries. The ranking was led by the Chad, Nigeria, and Lesotho with 53–54 years.

Life expectancy at birth, male (years) in North America was reported at 74.24 years in 2021, according to the World Bank collection of development indicators, compiled from officially recognized sources. North America - Life expectancy at birth, male (years) - actual values, historical data, forecasts and projections were sourced from the World Bank on September of 2025.

Life expectancy at birth, male (years) in United States was reported at 75.8 years in 2023, according to the World Bank collection of development indicators, compiled from officially recognized sources. United States - Life expectancy at birth, male (years) - actual values, historical data, forecasts and projections were sourced from the World Bank on October of 2025.

Global life expectancy at birth has risen significantly since the mid-1900s, from roughly 46 years in 1950 to 73.2 years in 2023. Post-COVID-19 projections There was a drop of 1.7 years during the COVID-19 pandemic, between 2019 and 2021, however, figures resumed upon their previous trajectory the following year due to the implementation of vaccination campaigns and the lower severity of later strains of the virus. By the end of the century it is believed that global life expectancy from birth will reach 82 years, although growth will slow in the coming decades as many of the more-populous Asian countries reach demographic maturity. However, there is still expected to be a wide gap between various regions at the end of the 2100s, with the Europe and North America expected to have life expectancies around 90 years, whereas Sub-Saharan Africa is predicted to be in the low-70s. The Great Leap Forward While a decrease of one year during the COVID-19 pandemic may appear insignificant, this is the largest decline in life expectancy since the "Great Leap Forward" in China in 1958, which caused global life expectancy to fall by almost four years between by 1960. The "Great Leap Forward" was a series of modernizing reforms, which sought to rapidly transition China's agrarian economy into an industrial economy, but mismanagement led to tens of millions of deaths through famine and disease.

Historical dataset showing Central America life expectancy by year from 1950 to 2025.

Japan had the highest life expectancy at birth of the G7 countries between 2000 and 2025, reaching **. On the other hand, life expectancy in the United States was ***** years, the only one of the seven where it was below 80. Life expectancy dropped in all G7 countries following the COVID-19 pandemic.

Life expectancy at birth, total (years) in United States was reported at 78.39 years in 2023, according to the World Bank collection of development indicators, compiled from officially recognized sources. United States - Life expectancy at birth, total (years) - actual values, historical data, forecasts and projections were sourced from the World Bank on September of 2025.

A global phenomenon, known as the demographic transition, has seen life expectancy from birth increase rapidly over the past two centuries. In pre-industrial societies, the average life expectancy was around 24 years, and it is believed that this was the case throughout most of history, and in all regions. The demographic transition then began in the industrial societies of Europe, North America, and the West Pacific around the turn of the 19th century, and life expectancy rose accordingly. Latin America was the next region to follow, before Africa and most Asian populations saw their life expectancy rise throughout the 20th century.

Tunisia had the highest projected life expectancy at birth in Africa as of 2025. A newborn infant was expected to live about 77 years in the country. Algeria, Cabo Verde, Morocco, and Mauritius followed, with a life expectancy between 77 and 75 years. On the other hand, Nigeria registered the lowest average, at 54.8 years. Overall, the life expectancy in Africa was just over 64 years in the same year.

Life expectancy at birth, total (years) in North America was reported at 76.98 years in 2021, according to the World Bank collection of development indicators, compiled from officially recognized sources. North America - Life expectancy at birth, total (years) - actual values, historical data, forecasts and projections were sourced from the World Bank on October of 2025.

Life expectancy in the United Kingdom was below 39 years in the year 1765, and over the course of the next two and a half centuries, it is expected to have increased by more than double, to 81.1 by the year 2020. Although life expectancy has generally increased throughout the UK's history, there were several times where the rate deviated from its previous trajectory. These changes were the result of smallpox epidemics in the late eighteenth and early nineteenth centuries, new sanitary and medical advancements throughout time (such as compulsory vaccination), and the First world War and Spanish Flu epidemic in the 1910s.

Life expectancy at birth, female (years) in North America was reported at 79.85 years in 2021, according to the World Bank collection of development indicators, compiled from officially recognized sources. North America - Life expectancy at birth, female (years) - actual values, historical data, forecasts and projections were sourced from the World Bank on September of 2025.

Projections of the Population (against the 1990 Census), By Age 65+ year old at individual State level: 1995 to 2025. Data provided by Census although I added calculations for percent change. (Numbers in thousands. Resident population. Series A projections. For more details, see Population Paper Listings #47, "Population Projections for States, by Age, Sex, Race, and Hispanic Origin: 1995 to 2025.")

Life expectancy in India was 25.4 in the year 1800, and over the course of the next 220 years, it has increased to almost 70. Between 1800 and 1920, life expectancy in India remained in the mid to low twenties, with the largest declines coming in the 1870s and 1910s; this was because of the Great Famine of 1876-1878, and the Spanish Flu Pandemic of 1918-1919, both of which were responsible for the deaths of up to six and seventeen million Indians respectively; as well as the presence of other endemic diseases in the region, such as smallpox. From 1920 onwards, India's life expectancy has consistently increased, but it is still below the global average.

On average, women live almost 6 years more than men in France. In 2024, female life expectancy at birth in France reached **** years compared to ** years for males. In 2023, life expectancy in France, regardless of gender, was ***** years. Thus, France is one of the countries in the world with the highest life expectancy. Women outlive men According to the source, there are differences in life expectancy between men and women in France. In 2004, female life expectancy in France was ****, compared to ** years for males. Since then, life expectancy for both genders has been evolving similarly. When life expectancy decreased slightly in 2015, it affected both men and women. Similarly, when life expectancy increased. But one aspect remained the same: male life expectancy remains lower than female life expectancy. This difference has been seen not only in France. In Europe, females are expected to live longer than men in every region. While women in France have a longer life expectancy, they are also expected to have a higher number of healthy life years. In 2013, a study from Eurostat showed that French women had several expected healthy years of ****, compared to ** years for men. An aging population Like other Western countries, France has an aging population. French citizens aged 65 years and older are now more than the French aged from 0 to 14 years old. The median age of the population in the country has been increasing since the nineties, while the share of seniors reached almost ** percent of the population in 2013.