List of United States senators from Colorado
Senator Term of office Date of birth ( and age )
Gary Hart January 3 , 1975 - January 3 , 1987 ( 1936-11-28 ) November 28 , 1936 ( age 83 )
Tim Wirth January 3 , 1987 - January 3 , 1993 ( 1939-09-22 ) September 22 , 1939 ( age 80 )
Hank Brown January 3 , 1991 - January 3 , 1997 ( 1940-02-12 ) February 12 , 1940 ( age 79 )
Ben N. Campbell January 3 , 1993 - January 3 , 2005 ( 1933-04-13 ) April 13 , 1933 ( age 86 )
Wayne Allard January 3 , 1997 - January 3 , 2009 ( 1943-12-02 ) December 2 , 1943 ( age 76 )
Ken Salazar January 3 , 2005 - January 20 , 2009 ( 1955-03-02 ) March 2 , 1955 ( age 64 )
Mark Udall January 3 , 2009 - January 3 , 2015 ( 1950-07-18 ) July 18 , 1950 ( age 69 )
Living former U.S. senators from Colorado
As of February 2020 [ update ] , there are seven living former U.S. senators from Colorado . The most recent senator to die was Bill Armstrong ( who served from January 3 , 1979 to January 3 , 1991 ) on July 5 , 2016 , and is also the most recently serving U.S senator from Colorado to die .
Colorado was admitted to the Union on August 1, 1876 and elects U.S. senators to Senate Class 2 and Class 3. Its current U.S. senators are Democrat Michael Bennet (serving since 2009) and Republican Cory Gardner (serving since 2015), making it one of nine states to have a split United States Senate delegation.