Steve Jobs was 56 years old when he died in 2011.
Jobs was born on February 24, 1955, in San Francisco, California, and died on October 5, 2011, at his home in Palo Alto. Because his death occurred after his birthday that year, he was 56 rather than 55. His death was announced by Apple, which described him as a visionary leader and co-founder.
Jobs had publicly discussed his health after being diagnosed with a rare form of pancreatic neuroendocrine tumor in 2003. He underwent surgery and later took medical leave from Apple several times. The condition was distinct from the far more common exocrine pancreatic cancer.
Age questions about Jobs can produce different answers if someone calculates only the difference between the calendar years. The exact age requires comparing the October 2011 death date with his February birthday.