The “new Pope Leo” – Pope Leo XIV – is 70 years old as of early 2026.

How we know his age

  • Pope Leo XIV was born on September 14, 1955, in Chicago, Illinois.
  • That makes him 70 years old after his birthday on September 14, 2025.
  • He publicly referred to “turning 70” during his birthday celebrations in St. Peter’s Square in September 2025.

So if you’re asking in 2026 “how old is the new Pope Leo,” the accurate answer is: he is 70.