From a story on axios.com by Sareen Habeshian headlined “Here are the oldest U.S. senators after Feinstein’s death”:

There are now three octogenarians and one nonagenarian in the U.S. Senate, where more than half of the chamber is over 60, following the death of its oldest serving member Dianne Feinstein of California at 90 this week.

The big picture: Feinstein faced scrutiny over health concerns and her ability to serve during her final years in office, as America’s aging leaders have been on display, prompting conversations around fitness for office, term limits and ageism.