List of Presidents of the United States by age Presidential age-related data Presidential age-related data

| President | Became_Oldest_Living_President | Ceased_to_Be_Oldest_Living_President | Age_at_Start_Date | Age_at_End_Date | Duration_Years_Days | Duration_Days_ |
|---|---|---|---|---|---|---|
| William Howard Taft | March 4, 1909 | March 4, 1913 | 51 years, 170 days | 55 years, 170 days | 4 years, 0 days | 1,461 days |
| Woodrow Wilson | March 4, 1913 | February 3, 1924 | 56 years, 66 days | 67 years, 37 days | 10 years, 336 days | 3,988 days |
| William Howard Taft | February 3, 1924 | March 8, 1930 | 66 years, 141 days | 72 years, 174 days | 6 years, 33 days | 2,225 days |
| Calvin Coolidge | March 8, 1930 | January 5, 1933 | 57 years, 247 days | 60 years, 185 days | 2 years, 303 days | 1,034 days |
| Herbert Hoover | January 5, 1933 | October 20, 1964 | 58 years, 148 days | 90 years, 71 days | 31 years, 289 days | 11,611 days |