Republican Ronald Reagan became the oldest president elected when he took office as the 40th president of the United States. The actor turned politician served two consecutive terms as president, from 1981 to 1989. read more
The youngest person to be elected president was John F. Kennedy, at 43 years, 163 days of age on election day; the oldest was Ronald Reagan, who was 73 years, 274 days old at the time of his election to a second term. read more