As Biden considers reelection bid, who are the oldest – and youngest – current world leaders?

Joe Biden, at 81, is the oldest American president, a distinction he’s held since entering office at age 78. As Biden runs for reelection in 2024, he is the ninth oldest national leader in the world, according to a Pew Research Center analysis of sitting leaders in 187 United Nations member states.

Former President Donald Trump, who is running for the White House again this year, is younger than Biden. But at 77, Trump also falls among the 20 oldest world leaders when compared with those currently in power.

American voters are skeptical about both candidates’ fitness for the job, according to a recent Center survey. Only about four-in-ten U.S. registered voters are extremely or very confident that Trump has the mental fitness to be president (38%), while a similar share are confident in his physical fitness (36%). Even fewer express this degree of confidence in Biden’s mental (21%) and physical (15%) fitness for the role.

Below are five key facts about the ages of current national leaders.

National leaders range in age from their mid-30s to 91. The youngest leader is Burkina Faso’s Ibrahim Traoré, who is 36. He only slightly edges out two fellow 36-year-olds, Ecuadorian President Daniel Noboa and Montenegrin Prime Minister Milojko Spajić. Only two other world leaders are in their 30s: Irish Taoiseach Simon Harris and Chilean President Gabriel Boric.

The oldest national leader is President Paul Biya of Cameroon, who was born in 1933 and took office more than 40 years ago. Biya is the only current national leader in his 90s.

The median age of current national leaders is 62, as of May 1, 2024. The largest share of global leaders today (34%) are in their 60s. Roughly a quarter (22%) are in their 50s; 19% are in their 70s; and 16% are in their 40s. Biden is among the 5% of leaders who are in their 80s.

Countries that are less free tend to have older leaders. In countries that Freedom House classifies as “not free,” the median age of the national leader is 68. That compares with 62 in countries that are classified as “partly free” and 60 in countries classified as “free.”

The United States is one of only three countries that are classified as free and have a leader age 80 or older; the other two are Ghana and Namibia. In Ghana, President Nana Akufo-Addo recently turned 80 in office. And in Namibia, 82-year-old Nangolo Mbumba took over as president earlier this year following the previous leader’s death in office at age 82.

The median age for women leaders and men leaders is the same. Among men who are world leaders, 3% are in their 30s, while no women leaders are in this age group. Yet, of the 14 women leaders currently in power, 29% are in their 40s, compared with 14% of leaders who are men.

Prime Minister Mette Frederiksen of Denmark is the youngest female leader at 46, followed closely by fellow 46-year-old Kaja Kallas, the prime minister of Estonia. Prime Minister Sheikh Hasina of Bangladesh is the oldest female leader at 76.

In most countries, the leader is significantly older than the median member of the population. For example, the median American is 38, according to UN population projections for 2024, while Biden is more than twice as old. In fact, the only countries that have a leader who is younger than the median resident of the country are Montenegro, Ireland and Italy. Andorran Prime Minister Xavier Espot Zamora, at 44, is the same age as the median Andorran resident. 

In general, countries that Freedom House classifies as free are more likely than those classified as partly free or not free to have leaders who are closer in age to the median resident of the country.

Note: This is an update of a post originally published on March 24, 2023.