how old was the youngest pope?

Answer 1

The birth dates and even years of early Popes are frequently not available. In modern times, Popes have generally been elected at older ages. Today a man of 65 years is generally considered too young to be Pope.

The youngest Pope was probably either
+ Pope Benedict IX who became Pope at an unknown age between 11 and 20
+ Pope John XII who was 18 at the beginning of his papacy

With love in Christ.

Answer 2

Benedict IX was born 1012 in Rome. he first became Pope in 1032 at 20 years old, although some believe he was 11 or 12, but that might not be true.

Pope John XII was believed to be youngest pope at 18 years old as well