| 1977 | DUBLIN | 2003 | SAN RAMON VALLEY | |
| 1979 | LIVERMORE | 2004 | SAN RAMON VALLEY | |
| 1980 | SAN RAMON VALLEY | 2005 | LIVERMORE | |
| 1981 | AMADOR VALLEY / SAN RAMON VALLEY | 2006 | SAN RAMON VALLEY | |
| 1982 | AMADOR VALLEY / SAN RAMON VALLEY | 2007 | AMADOR VALLEY | |
| 1983 | SAN RAMON VALLEY | 2008 | AMADOR VALLEY | |
| 1984 | LIVERMORE | 2009 | SAN RAMON VALLEY | |
| 1985 | LIVERMORE / SAN RAMON VALLEY | 2010 | DE LA SALLE | |
| 1986 | SAN RAMON VALLEY | 2011 | SAN RAMON VALLEY | |
| 1987 | SAN RAMON VALLEY | 2012 | AMADOR VALLEY |
| 1988 | SAN RAMON VALLEY | 2013 | DE LA SALLE | |
| 1989 | AMADOR VALLEY | 2014 | ||
| 1990 | LIVERMORE / AMADOR VALLEY | 2015 | ||
| 1991 | AMADOR VALLEY | 2016 | ||
| 1992 | LIVERMORE | 2017 | ||
| 1993 | LIVERMORE | 2018 | ||
| 1994 | LIVERMORE | 2019 | ||
| 1995 | 2020 | |||
| 1996 | 2021 | |||
| 1997 | AMADOR VALLEY | 2022 |
| 1998 | GRANADA | 2023 | ||
| 1999 | GRANADA | 2024 | ||
| 2000 | GRANADA | 2025 | ||
| 2001 | 2026 | |||
| 2002 | SAN RAMON VALLEY | 2027 |