Stewie is ageless, but his specific age is shrouded in secrecy. It's unclear the exact number of years Stewie has been living. The baby character from the animated television show "Family Guy" is immortal. His number of years is yet determined.
Stewart Gilligan Griffin, the cunning infant prodigy, is impossible to determine from the world. Speculation runs rampant as to his actual age. Is he a century old? Or is he fresh to the world? The answer is known only to Stewie! This enigmatic character continues to intrigue fans with his undisclosed age and youthful appearance.