California-Japan Sister City Lists

There are currently 113 sister city or friendship city relationships between cities in California and Japan.  The earliest sister city relationships began in 1957, and there have been additional relationships developed almost every year since then.  For PDFs of the full list of California-Japan sister city relationships, please click on the following links, each organized by a different parameter for your convenience:

California-Japan Sister City Relationships By Year Incorporated

California-Japan Sister City Relationships By California City Name

California-Japan Sister City Relationships By Japan City Name

California-Japan Sister City Relationships Celebrating Anniversaries in 2026

California-Japan Sister City Relationships Celebrating Anniversaries in 2027

California-Japan Sister City Relationships Celebrating Anniversaries in 2028

California-Japan Sister City Relationships Celebrating Anniversaries in 2029

California-Japan Sister City Relationships Celebrating Anniversaries in 2030