The Kern Regional Crime Laboratory serves a variety of agencies at the local, regional, state, and federal levels within Kern County – California's third largest county. For example, the Kern Regional Crime Laboratory serves county agencies, including:

• Kern County Office of the District Attorney
• Kern County Fire Department
• Kern County Sheriff’s Office

KRCL also serves local government agencies that serve to protect the people of Kern. These include the law enforcement agencies in the cities of:

• Arvin
• Bakersfield
• Bear Valley Springs
• California City
• Delano
• Ridgecrest
• Shafter
• Stallion Springs
• Taft

The Kern Regional Crime Laboratory supports state and federal law enforcement efforts through its collaborations with the:

• California Department of Fish and Game
• California Highway Patrol
• California Department of Corrections (which operates state prisons in the cities of Delano, Tehachapi, and Wasco)
• Federal Bureau of Investigation
• Federal Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF)
• United States Air Force
• United States Navy