san bernardino county
district attorney

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About San Bernardino County

Geographical Data

San Bernardino County is the largest county in the contiguous United States:

The county covers more than 20,000 square miles of land.

There are 24 cities and towns in the county and multiple unincorporated areas.

The county is bordered by Los Angeles, Orange, Riverside, Inyo and Kern counties as well as the Arizona and Nevada state lines

Interstates 10, 40, and 15, the major vehicle and truck routes into Southern California all travel through San Bernardino County as do the major rail freight routes.


The county is commonly divided into three distinct areas made up of the Valley Region (sometimes divided into East and West Valley), the Mountain Region, and the Desert Region:

The Valley Region contains the majority of the county’s incorporated areas and population.

The Mountain Region is primarily comprised of public lands owned and managed by federal and state agencies.

The Desert Region is the largest region (approximately 93% of the county’s land area) and includes parts of the Mojave Desert.

Our prosecutors attend courts disbursed throughout the county in Rancho Cucamonga, Victorville, Joshua Tree, and the county seat of San Bernardino. These attorneys review nearly 8,000 cases a month.


In January 2015, San Bernardino County's population was estimated at more than two million (2,128,133).

San Bernardino County is the twelfth most populous county in the nation, with more residents than 14 of the  country's states, including Idaho, West Virginia, and New Hampshire.

For more information and statistics, 
click here to visit the Countywide Vision website.


© 2011 San Bernardino County District Attorney. All Rights Reserved | Privacy Statement & Conditions

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It is the mission of the San Bernardino County District Attorney's Office to represent the interests of the people in the criminal justice system, as mandated by California State law. The San Bernardino County District Attorney's Office serves the residents of San Bernardino County by: seeking the truth, protecting the innocent; holding the guilty accountable; preserving the dignity of victims and their families; and, ensuring that justice is done while always maintaining the highest ethical standards.

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