1.) Don Young (House)Age: 87State: AlaskaYear elected: 19732.) Diane Feinstein (Senate)Age: 87State: CaliforniaYear elected: 19923.) Chuck Grassley (Senate)Age: 87State: IowaYear elected: 19814.) Richard Shelby (Senate)Age: 86State: AlabamaYear elected: 19875.) Jim Inhofe (Senate)Age: 86State: OklahomaYear elected: 1994.