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| Sexagenarian |
| Septuagenarian |
| Octogenarian |
| Nonagenarian |
| Centenarian |
| Supercentenarian |
A nonagenarian is a person in the age group from 90 to 99 years old. A nonagenarian of today is born between , 1904 and , 1914.
A few U.S. Presidents lived or are living to be nonagenarians, including John Adams, Herbert Hoover, Ronald Reagan, and Gerald Ford.
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