Gwinnett County Sheriff's Department

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Major Mark Cook – Shift Operations Section Commander

Major Mark Cook is the Shift Operations Section Commander in the Gwinnett County Jail. He was born and raised in New York, and earned a Bachelor of Arts degree at the State University of New York at Oswego. Major cook served in the U.S. Army and was a Military Police officer.  He joined the Sheriff’s Department in 1989.  He started with the department as a deputy and has worked his way up the ranks to his current position as a Major.  His hobbies include golf, weightlifting, and vacationing at the beach.