What will be the mean age of the next 5 US Presidents from 2022 to 2040?

To be president of the United States, one must be at least 35 years of age.

In Section 1 of Article II of the U.S. Constitution:

No Person except a natural born Citizen, or a Citizen of the United States, at the time of the Adoption of this Constitution, shall be eligible to the Office of President; neither shall any Person be eligible to that Office who shall not have attained to the Age of thirty five Years, and been fourteen Years a Resident within the United States.

The youngest US President was Theodore Roosevelt at 42 years 322 days in 1901 (JFK was the youngest elected president; Theodore Roosevelt was vice president when William McKinley was assassinated), and the oldest elected president is Joe Biden at 78 years 61 days in 2021 (incumbent president).

Opinion polls, such as those sponsored by Independent, typically indicate that people feel the current President Joe Biden and former President Donald Trump are/were "too old" to serve as President.

The mean age in years of the last 5 Presidents (as of 2022) at the start of presidency is ( \frac{54+47+51+70+78}{5} = 60 ) corresponding to George W. Bush, Barack Obama, Barack Obama (second term), Donald Trump, and Joe Biden, respectively.