<P> This page contains a list of the longest - living United States Senators among those currently living (incumbent or former) and a list of the individuals who, at the time of their deaths, were the longest - lived United States Senators among those current or former senators then living . Of those living, the longest - lived senator is Ernest Hollings . The oldest sitting senator is Dianne Feinstein (born 1933). The longest - lived senator in history is Cornelius Cole, who died at 102 . </P> <P> This is a list of the senators who were, while in office or after, the oldest living before they died . </P>

Who is the oldest senator currently serving in congress