| Year | Class 4A | Class 3A | Class 2A |
|---|---|---|---|
| 2024 | Campbell County | Wheatland | Thermopolis |
| 2023 | Cheyenne East | Riverton | Upton |
| 2022 | Jackson | Riverton | Thermopolis |
| 2021 | Jackson | Riverton | Thermopolis |
| 2020 | Sheridan | Worland | Thermopolis |
| 2019 | Kelly Walsh | Lander | Thermopolis |
| 2018 | Kelly Walsh | Lander | Thermopolis |
| 2017 | Kelly Walsh | Lander | Lovell |
| 2016 | Riverton | Wheatland | Wright |
| 2015 | Riverton | Pinedale | Thermopolis |
| 2014 | Riverton | Pinedale | Thermopolis |
| 2013 | Riverton | Lander | Wright |
| 2012 | Kelly Walsh | Jackson | Thermopolis |
| 2011 | Sheridan | Powell | Lusk |
| 2010 | Sheridan | Cody | Kemmerer |
| 2009 | Evanston | Cody | Kemmerer |
| 2008 | Sheridan | Douglas | Lusk |
| 2007 | Cheyenne Central | Lander | Lusk |
| 2006 | Cheyenne Central | Lander | Tongue River |
| 2005 | Cheyenne Central | Buffalo | Lovell |
| 2004 | Cheyenne Central | Star Valley | Lovell |
| 2003 | Sheridan | Lander | Lusk |
| 2002 | Kelly Walsh | Worland | Lusk |
| 2001 | Kelly Walsh | Worland | Sundance |
| 2000 | Rock Springs | Worland | - |
| 1999 | Sheridan | Lander | - |
| 1998 | Evanston | Douglas | - |
| 1997 | Sheridan | Kemmerer | - |
| 1996 | Sheridan | Star Valley | - |
| 1995 | Sheridan | Star Valley | - |
| 1994 | Cheyenne Central | Worland | - |
| 1993 | Natrona | Worland | - |
| 1992 | Cheyenne Central | Buffalo | - |
| 1991 | Sheridan | Wheatland | - |
| 1990 | Rock Springs | Lander | - |
| 1989 | Cheyenne Central | Kemmerer | - |
| 1988 | Rock Springs | Kemmerer | - |
| 1987 | Rock Springs | Worland | - |
| 1986 | Cheyenne East | Buffalo | - |
| 1985 | Cheyenne Central | Buffalo | - |
| 1984 | Lander | Douglas | - |
| 1983 | Campbell County | Douglas | - |
| 1982 | Cheyenne Central | Douglas | - |
| 1981 | Natrona | Douglas | - |
| 1980 | Cheyenne Central | Thermopolis | - |
| 1979 | Cody | Thermopolis | - |
| 1978 | Natrona | Wheatland | - |
| 1977 | Campbell County | Evanston | - |
| 1976 | Natrona | Green River | - |
| 1975 | Campbell County | Green River | - |
| 1974 | Cheyenne East | Wheatland | - |
| 1973 | Laramie | Green River | - |
| 1972 | Kelly Walsh | Wheatland | - |
| 1971 | Natrona | Douglas | - |
| 1970 | Natrona | Green River | - |
| 1969 | Natrona | Campbell County | - |
| 1968 | Natrona | - | - |
| 1967 | Cheyenne Central | - | - |
| 1966 | Kelly Walsh | - | - |
| 1965 | Sheridan | - | - |
| 1964 | Natrona | - | - |
| 1963 | Natrona | - | - |
| 1962 | Natrona | - | - |
| 1961 | Cheyenne East | - | - |
Total team championships
Cheyenne Central, Natrona, Thermopolis, Sheridan: 11
Lander: 10
Kelly Walsh: 8
Douglas, Riverton, Worland: 7
Wheatland: 6
Campbell County, Kemmerer, Lusk: 5
Buffalo, Cheyenne East, Green River, Rock Springs: 4
Cody, Evanston, Jackson, Lovell, Star Valley: 3
Pinedale, Wright: 2
Laramie, Powell, Sundance, Tongue River, Upton: 1