Stewie is eternally young, but his specific age is shrouded in secrecy. It's unclear the exact number of years Stewie became on this planet. The baby character from the animated television show "Family Guy" is age-defying. His time on Earth is yet revealed.
Stewie, the clever little troublemaker, is keeping his age a secret from the world. Speculation is rampant as to the length of time he
has existed. Is he over a hundred years old? Or is he a recent
arrival? The answer is known only to Stewie! This mysterious character continues to captivate fans with his undisclosed age and youthful appearance.