When it comes to federal matters, yes, the US District Court is superior to the state court.
The riverside Superior Court is located in the Riverside County of California, USA. It is, in fact, the supreme court for the entire state of California.
No
The Placer County Superior Court is a court that is located in the state of California. The address for the Placer County Superior Court is 11270 B Avenue Auburn, CA 95603.
The highest court not under Federal jurisdiction would be the California State Supreme Court.
In California probate proceedings are conducted in the Superior Court. You can check the court records to find them.
The LA Superior Court has many locations through out California. There is a court in most districts of California and each can offer all services required. They have a great website that can direct you to the one closest to your home.
The Alameda Superior Court can be found across the street from the Oakland Museum of California and next to Lake Merritt in Oakland California. The address is 1225 Fallon Street.
Trial courts in the California state court system are called Superior Courts. Unlike many states, California only has one type of trial court. This means that all cases, from small claims, to divorce, to misdemeanors, to felonies are heard by the Superior Courts. Each county in California has its own Superior Court. Within a county, there may be multiple Superior Court locations. In larger counties, there are separate divisions within a Superior Court for different types of cases. For more information on California Superior Courts and information on your local Superior Court, visit the California Court Directory related link.
If you mean federal circuit courts of appeal, there is one: the US Court of Appeals for the Ninth Circuit, which includes California along with Arizona, Idaho, Montana, Nevada, Oregon, and Washington. See the first related link below. If you mean California state courts, there are no circuit courts in California. The only types of courts in California are Supreme Court, Courts of Appeals, and Superior Courts. There is one California Supreme Court and six Courts of Appeal. See the second related link below. Superior Courts are the trial courts. There is a Superior Court in each of the 58 counties, but many counties have more than one location where Supreme Court is held, so there are actually over 300 separate Superior Court locations. The third related link below, CourtReference Guide to California Courts, has location information for all California trial courts (and has the same info for every state).
Federal district court, e.g., United States District Court for the Central District of California (C.D. Cal).
The Riverside Superior Court mailing address is 4050 Main St, Riverside, California 92501. There is also a post office box address and that address is P.O. Box 1547, Riverside, California 95202