California Federal Districts: 4 Courts, Ninth Circuit, and Filing

California is divided into four federal court districts: the Northern, Eastern, Central, and Southern Districts of California. Each covers a defined group of counties, holds court in specific cities set by federal statute, and applies its own local rules on top of the Federal Rules of Civil Procedure. All four sit below the U.S. Court of Appeals for the Ninth Circuit, which hears appeals from every California federal district court.¹

These are the trial-level courts in the federal system. They handle cases involving federal law, constitutional questions, and disputes between citizens of different states when more than $75,000 is at stake.² Which district applies to you depends on the county you live in or where the events giving rise to your case occurred.

Northern District of California

The Northern District runs along the coast from Monterey County up to the Oregon border and covers fifteen counties: Alameda, Contra Costa, Del Norte, Humboldt, Lake, Marin, Mendocino, Monterey, Napa, San Benito, San Francisco, San Mateo, Santa Clara, Santa Cruz, and Sonoma.³

Federal statute designates four locations where court is held: San Francisco, Oakland, San Jose, and Eureka.³ The Eureka courthouse is physically located in nearby McKinleyville.⁴ San Francisco and Oakland handle most of the caseload; San Jose serves the Santa Clara Valley and points south.⁵

For case-assignment purposes, the court groups San Francisco and Oakland together, while San Jose and Eureka each operate under their own divisional rules. When you file, your complaint must state the basis for the divisional assignment so the clerk can route the case correctly.⁶

Eastern District of California

The Eastern District is geographically enormous. It runs from the Oregon border south through the Central Valley and Sierra Nevada to the Tehachapi Mountains and covers thirty-four counties, including Sacramento, Fresno, San Joaquin, Kern, and Solano, along with sparsely populated mountain counties like Alpine, Mono, and Inyo.³ It is one of the largest federal districts by land area in the lower 48 states.

Court is held in Sacramento, Fresno, Redding, and Bakersfield.³ A small courthouse in Yosemite also operates, though filings there must be submitted electronically or through the Fresno clerk’s office.⁷ The district also runs satellite offices in Modesto, Roseville, and Visalia for probation and pretrial services.⁸

The caseload reflects the territory. Water rights, environmental regulation, federal land management, and agricultural disputes appear alongside the criminal and civil matters common to any federal court.

Central District of California

The Central District is the most populous federal judicial district in the country, serving more than 19 million people across seven counties.³ To handle the volume, it is split into three divisions:

Western Division, based in Los Angeles, covers Los Angeles, San Luis Obispo, Santa Barbara, and Ventura counties.
Southern Division, based in Santa Ana, covers Orange County.
Eastern Division, based in Riverside, covers Riverside and San Bernardino counties.

The division structure comes from statute and determines where your case is heard.³ The Western Division in downtown Los Angeles handles the largest share of filings, including entertainment, intellectual property, and complex commercial litigation. Riverside serves the Inland Empire, and Santa Ana handles Orange County.⁹ Each division maintains its own clerk’s office and courtrooms. Filing in the wrong division can result in a transfer, which adds delay.

Southern District of California

The Southern District is the smallest of the four by geography, covering just San Diego and Imperial counties.³ Sitting along the international border with Mexico, it handles one of the heaviest criminal dockets in the federal system, driven largely by immigration prosecutions and cross-border cases.¹⁰

The main courthouse sits in downtown San Diego, with a second courthouse in El Centro serving Imperial County.¹¹ Congress has authorized 13 active district judgeships for the court, and weighted caseloads per judge have consistently run above the national average.¹²

Appeals Go to the Ninth Circuit

All four California federal districts sit within the United States Court of Appeals for the Ninth Circuit, the largest federal appellate circuit in the country. The Ninth Circuit also covers Alaska, Arizona, Hawaii, Idaho, Montana, Nevada, Oregon, Washington, Guam, and the Northern Mariana Islands, and is headquartered in San Francisco.¹

Ninth Circuit rulings bind all district courts within its territory. A decision interpreting federal law in a case from the Eastern District carries the same weight in the Northern, Central, and Southern Districts. Only the U.S. Supreme Court can override a Ninth Circuit ruling.

What Filing in a California Federal District Involves

Starting a civil case in any federal district court costs $405, made up of a $350 statutory filing fee plus a $55 administrative fee set by the Judicial Conference.¹³ If you cannot afford the fee, you can apply to proceed in forma pauperis by filing an affidavit of your income and assets. The court will waive the fee if it finds you genuinely unable to pay.¹⁴

Each district maintains its own local rules on top of the Federal Rules of Civil Procedure. Local rules cover page limits, formatting, judge assignment, and scheduling, and federal law requires them to be consistent with, and not duplicate, the federal rules.¹⁵ Differences between districts are real: the Northern District’s case-assignment rules look nothing like the Central District’s divisional system. If you’re moving from one California federal court to another, read the local rules before you file.

Membership in the California State Bar does not automatically let an attorney practice in California’s federal courts. Each district requires a separate admission process involving an application, a certificate of good standing, a fee, and an oath. The Central District, for example, charges between $231 and $281 depending on how long the attorney has been licensed.¹⁶ Admission to one California federal district does not grant admission to the others.

Self-represented litigants have options too. The Central District runs free pro se clinics in Los Angeles, Riverside, and Santa Ana, staffed by the nonprofit Public Counsel.¹⁷ The clinics do not represent you, but they can help you understand filing procedures, court forms, and how to navigate the federal system on your own.

1
United States Court of Appeals for the Ninth Circuit. United States Courts for the Ninth Circuit
2
Office of the Law Revision Counsel. 28 U.S. Code 1332 – Diversity of Citizenship; Amount in Controversy; Costs
3
Office of the Law Revision Counsel. 28 USC 84 – California
4
United States District Court. Eureka-McKinleyville
5
United States District Court. About the Court
6
United States District Court Northern District of California. Civil Local Rules
7
Eastern District of California. Court Directions
8
Eastern District of California. Eastern District of California
9
United States District Court. Central District of California – Section: Western Division
10
United States Sentencing Commission. Statistical Information Packet Fiscal Year 2024 Southern District of California
11
U.S. Marshals Service. Southern District of California – Courthouse Locations
12
U.S. Congress. United States District Court – Congressional Testimony
13
Office of the Law Revision Counsel. 28 USC 1914 – District Court; Filing and Miscellaneous Fees
14
Office of the Law Revision Counsel. 28 USC 1915 – Proceedings In Forma Pauperis
15
Legal Information Institute. Rule 83 – Rules by District Courts; Judges Directives
16
United States District Court. Attorney Admission Fee Increase
17
United States District Court Central District of California. Los Angeles Federal Pro Se Clinic