| 1977 | SAN RAMON VALLEY | 1997 | AMADOR VALLEY | |
| 1978 | DUBLIN | 1998 | FOOTHILL | |
| 1979 | AMADOR VALLEY | 1999 | FOOTHILL | |
| 1980 | SAN RAMON VALLEY | 2000 | GRANADA | |
| 1981 | MONTE VISTA | 2001 | MONTE VISTA | |
| 1982 | MONTE VISTA | 2002 | MONTE VISTA | |
| 1983 | MONTE VISTA | 2003 | FOOTHILL | |
| 1984 | MONTE VISTA / SAN RAMON VALLEY | 2004 | AMADOR VALLEY | |
| 1985 | SAN RAMON VALLEY | 2005 | MONTE VISTA | |
| 1986 | MONTE VISTA | 2006 | FOOTHILL |
| 1987 | MONTE VISTA | 2007 | CALIFORNIA / SAN RAMON VALLEY | |
| 1988 | FOOTHILL | 2008 | DE LA SALLE | |
| 1989 | MONTE VISTA | 2009 | DE LA SALLE | |
| 1990 | AMADOR VALLEY / FOOTHILL | 2010 | DE LA SALLE | |
| 1991 | MONTE VISTA | 2011 | DE LA SALLE | |
| 1992 | MONTE VISTA | 2012 | CALIFORNIA / SAN RAMON VALLEY | |
| 1993 | LIVERMORE | 2013 | CALIFORNIA | |
| 1994 | 2014 | CALIFORNIA / FOOTHILL | ||
| 1995 | 2015 | MONTE VISTA | ||
| 1996 | 2016 | SAN RAMON VALLEY |
LEGAUE CHAMPIONS AFTER THE COMPETITIVE EQUITY SPLIT
*DE LA SALLE OPTED OUT OF LEAGUE CHAMPIONSHIPS
| MOUNTAIN DIVISION | VALLEY DIVISION | |
| 2017 | SAN RAMON VALLEY | GRANADA |
| 2018 | SAN RAMON VALLEY | AMADOR |
| 2019 | CLAYTON VALLEY | FOOTHILL |
| 2020 | CLAYTON VALLEY | FOOTHILL |
| 2021 | CLAYTON VALLEY | FOOTHILL |
| 2022 | SAN RAMON VALLEY | FOOTHILL |
| 2023 | SAN RAMON VALLEY | AMADOR VALLEY |
| 2024 | SAN RAMON VALLEY | GRANADA |
| 2025 | SAN RAMON VALLEY | LIVERMORE |