| Year | Class 4A/AA | Class 3A/A | Class 2A/B |
|---|---|---|---|
| 2025 | Thunder Basin | Powell | Moorcroft |
| 2024 | Thunder Basin | Green River | Moorcroft |
| 2023 | Sheridan | Green River | Kemmerer |
| 2022 | Natrona | Star Valley | Kemmerer |
| 2021 | Natrona | Star Valley | Wright |
| 2020 | Kelly Walsh | Star Valley | Moorcroft |
| 2019 | Kelly Walsh | Star Valley | Moorcroft |
| 2018 | Cheyenne East | Star Valley | Moorcroft |
| 2017 | Green River | Star Valley | Moorcroft |
| 2016 | Green River | Star Valley | Moorcroft |
| 2015 | Campbell County | Powell | Moorcroft |
| 2014 | Campbell County | Powell | Moorcroft |
| 2013 | Campbell County | Powell | Moorcroft |
| 2012 | Campbell County | Powell | Cokeville |
| 2011 | Campbell County | Worland | Cokeville |
| 2010 | Campbell County | Douglas | Greybull |
| 2009 | Campbell County | Powell | Cokeville |
| 2008 | Campbell County | Powell | Cokeville |
| 2007 | Campbell County | Star Valley | Cokeville |
| 2006 | Campbell County | Star Valley | Cokeville |
| 2005 | Campbell County | Torrington | Moorcroft |
| 2004 | Campbell County | Star Valley | Wright |
| 2003 | Campbell County | Star Valley | Cokeville |
| 2002 | Green River | Torrington | Lusk |
| 2001 | Green River | Worland | Lusk |
| 2000 | Green River | Worland | Lusk |
| 1999 | Laramie | Douglas | Lusk |
| 1998 | Campbell County | Star Valley | Lovell |
| 1997 | Green River | Star Valley | Lovell |
| 1996 | Green River | Star Valley | Lovell |
| 1995 | Campbell County | Star Valley//Torrington | Lovell |
| 1994 | Green River | Star Valley | Greybull |
| 1993 | Campbell County | Star Valley | Wind River |
| 1992 | Green River | Star Valley | Greybull |
| 1991 | Rock Springs | Buffalo | Greybull |
| 1990 | Sheridan | Buffalo | Greybull |
| 1989 | Green River | Wheatland | Greybull |
| 1988 | Rock Springs | Star Valley | Lyman |
| 1987 | Rock Springs | Powell | Greybull |
| 1986 | Rock Springs | Worland | Greybull |
| 1985 | Green River | Worland | Greybull |
| 1984 | Natrona | Douglas | Greybull |
| 1983 | Worland | Star Valley | Basin |
| 1982 | Green River | Evanston | Upton |
| 1981 | Natrona | Evanston | Upton |
| 1980 | Rock Springs | Star Valley | Midwest |
| 1979 | Green River | Star Valley | Upton |
| 1978 | Green River | Newcastle | Midwest |
| 1977 | Laramie | Green River | Saratoga |
| 1976 | Rock Springs | Buffalo | Mountain View |
| 1975 | Powell//Natrona | Douglas | Saratoga |
| 1974 | Powell | Green River | Saratoga |
| 1973 | Laramie | Star Valley | Sundance |
| 1972 | Laramie | Star Valley | Sundance |
| 1971 | Rock Springs | Newcastle | Sundance |
| 1970 | Natrona | Green River | Sundance |
| 1969 | Natrona | Newcastle | Sundance |
| 1968 | Natrona | Star Valley | Moorcroft |
| 1967 | Cheyenne Central | Wheatland | Saratoga |
| 1966 | Cheyenne Central | Lusk | Saratoga |
| 1965 | Cheyenne East | Newcastle | Saratoga |
| 1964 | Laramie | - | - |
| 1963 | Worland | - | - |
| 1962 | Lander | - | - |
| 1961 | Worland | - | - |
| 1960 | Powell | - | - |
| 1959 | Worland | - | - |
| 1958 | Laramie | - | - |
| 1957 | Saratoga | - | - |
| 1956 | Laramie | - | - |
| 1955 | Cheyenne Central | - | - |
| 1954 | Rock Springs | - | - |
| 1953 | Cheyenne Central | - | - |
| 1952 | Cody | - | - |
| 1951 | Cody | - | - |
| 1950 | Cody | - | - |
| 1949 | Cody | - | - |
| 1948 | Cody | - | - |
| 1947 | Cody | - | - |
Total team championships
Star Valley: 25
Green River: 19
Campbell County: 16
Moorcroft: 12
Powell: 11
Greybull: 10
Worland: 9
Natrona, Rock Springs: 8
Cokeville, Laramie, Saratoga: 7
Cody: 6
Lusk, Sundance: 5
Cheyenne Central, Douglas, Lovell, Newcastle: 4
Buffalo, Torrington, Upton: 3
Cheyenne East, Evanston, Kelly Walsh, Kemmerer, Midwest, Sheridan, Thunder Basin, Wheatland, Wright: 2
Basin, Lander, Lyman, Mountain View, Wind River: 1