Superior Court of San Mateo in Superior court Here are all of the Superior court located in the San Mateo County. San Mateo County Superior Court – Central Branch800 North Humboldt Street, San Mateo, CA 94401Phone: 650-363-4300 (Traffic) San Mateo County Superior Court – Juvenile Branch222 Paul Scannell Drive, San Mateo, CA 94402Phone: 650-261-5100 San Mateo County Superior Court – Northern Branch1050 Mission Road, South San Francisco, CA 94080Phone: 650-261-5080 (Family Court Services) San Mateo County Superior Court – Southern BranchHall of Justice and Records400 County Center, Redwood City, CA 94063Phone: 650-261-5100 (Civil, Family Law, Probate)Phone: 650-261-5200 (Criminal)Phone: 650-261-5015 (Small Claims) San Mateo County Superior Court – Southern Branch Annex500 County Center, Redwood City, CA 94063Phone: 650-363-4300 (Traffic)