In addition to the current Council Members page, this list details all past (and current) Council Member terms, listed by state, then date.

IDAHO
Chris Carlson Apr 8, 1981 - Jan 1984 (left late in 1981)
Robert Saxvik Apr 8, 1981 - Jan 1984; Jan 1984 - Jan 1987; Jan 1987 - Jan 1990; Jan 1990 - Jan 1993; Jan 1993 - Jan 1996 (replaced by Gov. Batt Dec 1994)
W. Larry Mills Nov 4, 1981 - Jan 1984; Jan 1984 - Jan 1987
James A. Goller Feb 1, 1987 - Jan 1992; Jan 1992 - Jan 1995 (resigned Nov 1992)
Jay Webb Feb 1, 1993 - Jan 15, 1995 (resigned Dec 2, 1994)
Andy Brunelle Dec 2, 1994 - Dec 31, 1994
Todd Maddock Jan 15, 1995 - Jan 15, 1997  (finished Andy Brunelle’s term); Jan 15, 1997 - Jan 15, 2000
Mike Field Jan 15, 1995 - Jan 15, 1998; Jan 15, 1998 - May 13, 2001
Jim Kempton Jan 1, 2001 - Jan 31, 2003; Jan 15, 2003 - Jan 15, 2006; Jan 15, 2006 - Jan 15, 2009
Judi Danielson May 14, 2001 - Jan 31, 2004; Jan 15, 2004 - Jan 15, 2007
W. Bill Booth Jan 15, 2007 - Jan 15, 2010; Jan 15, 2010 - Jan 15, 2013; Jan 15, 2013 - Jan 15, 2016; Jan 15, 2016 - Jan 15, 2019
James Yost Oct 16, 2007 - Jan 15, 2009; Jan 16, 2009 - Jan 15, 2018; Jan 16, 2018 - Jan 15, 2021; Jan 15, 2021 -
Jeffery Allen Feb 19, 2019 - Feb 19, 2021; Feb 19, 2021 -
Ed Schriever Apr 26, 2023 -
MONTANA (terms are at the pleasure of the Governor)
Keith L. Colbo Apr 1981 - Jan 1984
Gerald Mueller Apr 1981 - Jan 1987
Morris Brusett Jan 1985 - Jan 1989
George Turman Jan 1987 - Jan 1989
John Brenden Jan 1989 - Dec 1992
Stan Grace Jan 1989 - Sep 2001
John Etchart Jan 1993 - Dec 2000
Leo Giacometto Jan 2001 - Mar 2002
Ed Bartlett Oct 2001 - Dec 2004
John Hines Mar 2002 - Dec 2004
Bruce Measure Jan 2005 (reappointed in Mar 2009) - Feb 2013
Rhonda Whiting Jan 2005 (reappointed in Mar 2009, resigned in Jan 2013)
Pat Smith Jan 2013 - Dec 2016
Jennifer Anders Mar 2013 - Dec 2020 (Pleasure of the Governor)
Tim Baker Jan 2017 - June 2019
Bo Downen Aug 2019 - Mar 2021
Douglas Grob Feb 2021 -
Mike Milburn Apr 2021 -
OREGON
Leroy Hemmingway Apr 14, 1981 - Jan 15, 1983; Jan 15, 1983 - Jan 15, 1986
Herb Schwab Apr 13,1981 - Jan 15, 1984 (left in 1982)
Alfred Hampson Feb 1, 1982 - Jan 15, 1984
Don Godard Jan 16, 1984 - Jan 15, 1987
Robert Duncan Jan 16, 1984 - Jan 15, 1989 (left mid - 1988)
Norma Paulus Feb 4, 1987 - Jan 15, 1990
Ted Hallock June 17,1988 - Jan 15, 1989; Jan 16, 1989 - Jan 15, 1992; Jan 15, 1992 - Jan 15, 1995 (replaced by Gov. Roberts with a term ending Dec 19, 1994)
Angus Duncan Jan 16, 1990 - Jan 15, 1993; Jan 16, 1993 - Jan 15, 1996 (resigned in Sep 1995)
Joyce Cohen Dec 19, 1994 - Jan 15, 1998
John Brogoitti Sep 16, 1995 - Jan 15,1996; Jan 16, 1996 - Jan 15, 1999; Jan 16, 2000 - Jan 15, 2002
Eric Bloch Apr 10, 1998 (June 15) - Jan 15, 2001; Jan 16, 2001 - Jan 1, 2003 (left Jan 2003)
Gene Derfler Nov 8, 2002 - Jan 15, 2005
Melinda Eden Jan 1, 2003; Jan 2004 - Jan 2007; Jan 2007 - Jan 2010
Joan Dukes Jan 15, 2005 - Jan 15, 2008; Jan 15, 2008 - Jan 15, 2011 (left July 31, 2012)
Bill Bradbury Jan 3, 2010 - Jan 15, 2013; Jan 15, 2013 - Jan 15, 2016 (held position until Jan 15, 2018)
Henry Lorenzen Aug 1, 2012 - Jan 15, 2015; Jan 15, 2015 - Jan 15, 2018
Ted Ferrioli Jan 16, 2018 - Mar 31, 2021
Richard Devlin Jan 16, 2018 - Jan 15, 2021; Jan 15, 2021 - Nov 2021
Chuck Sams Apr 1, 2021 - May 1, 2021 (took another position)
Ginny Burdick Nov 2021 - Feb 2025
Louis Pitt, Jr. Nov 2021 - Feb 2025
Margaret Hoffmann Mar 2025 -
Chuck Sams Mar 2025 -
WASHINGTON
Daniel J. Evans Apr 26, 1981 - Jan 15, 1984; Jan 15, 1984 - Jan 15, 1987 (left Sep 1983)
Charles Collins Apr 26, 1981 - Jan 15, 1984; Jan 15, 1984 - Jan 15, 1987 (left Jan 1986)
Kai N. Lee Oct 1983 - Jan 15, 1987; Jan 16, 1987 - Jan 15, 1990 (left Nov 20, 1987)
Tom Trulove Jan 31, 1986 - Jan 15, 1989; Jan 9, 1989 - Jan 15, 1992; Jan 15, 1992 - Jan 15, 1995 (replaced by Gov Lowry Feb 28, 1994)
R. Ted Bottiger Nov 2, 1987 - Jan 15, 1990; Jan 15, 1990 - Jan 15, 1993; Jan 15, 1993 - Jan 15, 1996 (retired in Jan 1995)
Ken Casavant Feb 28, 1994 - Jan 15, 1995; Jan 15, 1995 - Jan 15, 1998 (served until June 30, 1998)
Mike Kreidler Jan 15, 1995 - Jan 15, 1996; Jan 15, 1996 - Jan 15, 1999
Tom Karier July 1, 1998 - Jan 15, 2001; Jan 16, 2001 - Jan 15, 2004; Jan 15, 2004 - Jan 15, 2007; Jan 16, 2007 - Jan 15, 2010; Jan 16, 2010 - Jan 15, 2013; Jan 15, 2013 - Jan 15, 2016; Jan 15, 2016 - Jan 15, 2019 (served until Mar 26, 2019)
Frank L. Cassidy, Jr. Aug 3, 1998 - Jan 15, 1999; Jan 16, 1999 - Jan 15, 2002; Jan 16, 2002 - Jan 15, 2005; Jan 16, 2005 - Jan 15, 2008
Richard K. Wallace Jan 15, 2008 - July 1, 2011
Phil Rockefeller July 1, 2011 - Jan 15, 2014; Jan 15, 2014 - Jan 15, 2017 (retired Aug 2016)
Guy Norman Sep 2016 - Jan 16, 2017; Jan 17, 2017 - Jan 15, 2021; Jan 16, 2020 - Jan 15, 2023
Patrick Oshie Mar 27, 2019 - Jan 15, 2022
KC Golden Mar 2022 -
Thomas L. Purce Feb 27, 2023 -