The California Highway Patrol has 7,800 officers .
Following are the top 6 largest law enforcement or police agencies in the United States : 1 ) New York City Police Department ( 34,000 officers ) ; 2 ) California Department of Corrections and Rehabilitation ( 31,000 officers ) ; 3 ) Chicago Police Department ( 15,000 officers ) ; 4 ) Los Angeles Police Department ( 9,969 officers ) ; 5 ) Los Angeles County Sheriff 's Department ( 9,700 deputies ) 6 ) California Highway Patrol ( 7,800 officers ) .
California Department of Corrections and Rehabilitation