State: CaliforniaCounty: San Mateo Biz Office Phone: (650) 261-5100FCS Phone: (650) 261-5100Website: https://www.sanmateo.courts.ca.gov/Local Forms: https://sanmateo.courts.ca.gov/divisions/family-law-division/formsLocal Rules: https://sanmateo.courts.ca.gov/general-information/local-rulesCourt Holidays: https://sanmateo.courts.ca.gov/general-information/court-holidayse-Filing: https://sanmateo.courts.ca.gov/online-services/e-filing