| Year | Class 4A | Class 3A | Class 2A |
|---|---|---|---|
| 2023 | Sheridan | Wheatland | Thermopolis |
| 2022 | Kelly Walsh | Wheatland | Upton |
| 2021 | Sheridan | Wheatland | Upton |
| 2020 | Thunder Basin | Lovell | Sundance |
| 2019 | Thunder Basin | Riverton | Sundance |
| 2018 | Kelly Walsh | Torrington | Wright |
| 2017 | Kelly Walsh | Lander | Wright |
| 2016 | Kelly Walsh | Lander | Tongue River |
| 2015 | Sheridan | Cody | Big Horn |
| 2014 | Evanston | Cody | Lusk |
| 2013 | Natrona | Buffalo | Lusk |
| 2012 | Natrona | Cody | Lusk |
| 2011 | Campbell County | Rawlins | Moorcroft |
| 2010 | Cheyenne Central | Cody | Moorcroft |
| 2009 | Cheyenne Central | Lander | Moorcroft |
| 2008 | Campbell County | Lander | Thermopolis |
| 2007 | Campbell County | Cody | Thermopolis |
| 2006 | Sheridan | Buffalo | Lusk |
| 2005 | Rock Springs | Kemmerer | Lusk |
| 2004 | Natrona | Star Valley | Lusk |
| 2003 | Campbell County | Star Valley | Lusk |
| 2002 | Campbell County | Lander | Lusk |
| 2001 | Campbell County | Powell | Lusk |
| 2000 | Campbell County | Buffalo | - |
| 1999 | Natrona | Buffalo | - |
| 1998 | Cheyenne Central | Worland | - |
| 1997 | Rock Springs | Star Valley | - |
| 1996 | Rock Springs | Worland | - |
| 1995 | Cheyenne Central | Buffalo | - |
| 1994 | Natrona | Buffalo | - |
| 1993 | Natrona | Buffalo | - |
| 1992 | Natrona | Star Valley | - |
| 1991 | Natrona | Buffalo | - |
| 1990 | Rock Springs | Douglas | - |
| 1989 | Star Valley | - | - |
| 1988 | Evanston | - | - |
| 1987 | Natrona | - | - |
| 1986 | Cheyenne Central | - | - |
| 1985 | Cheyenne Central | - | - |
| 1984 | Cheyenne Central | - | - |
| 1983 | No team champion | - | - |
| 1982 | No team champion | - | - |
| ??? | - | - | - |
| 1970 | Kelly Walsh | - | - |
| 1969 | Natrona | - | - |
Total team championships
Natrona: 10
Lusk: 9
Buffalo: 8
Campbell County, Cheyenne Central: 7
Cody, Kelly Walsh, Lander, Star Valley: 5
Rock Springs, Sheridan: 4
Moorcroft, Thermopolis, Wheatland: 3
Evanston, Sundance, Thunder Basin, Upton, Worland, Wright: 2
Big Horn, Douglas, Kemmerer, Lovell, Powell, Rawlins, Riverton, Torrington, Tongue River: 1