Oldest President Alive 2025 Age. In january 2025, he will be five months older than joe biden on inauguration day. Jimmy carter, who is still living, is the oldest president at age 100.

20, 2025, he will be 82 years and 2 months (or 30,012 days) old. On march 22, 2019, jimmy carter became the longest living us president at 94 years, 172 days old surpassing george h.w.