Captain Mark Cox was born and raised in St. Louis County where he currently resides with his wife and their two children. Captain Cox earned his Bachelors degree from the University of Missouri-St. Louis. He is a graduate of the Northwestern University, School of Police Staff and Command, class 317.
In August 1992, he attended the St. Louis County and Municipal Police Academy as a police recruit. Upon graduation from the police academy he was assigned to the Division of Patrol, South County Precinct as a patrol officer. In 1995, he was reassigned to the City of Fenton, which began a full service contract with the St. Louis County Police Department for their police services.
In 1998, Captain Cox was transferred to the Division of Criminal Investigation, Bureau of Drug Enforcement where he became a drug detective and a narcotics canine handler. As a canine handler, Captain Cox handled three Department canines, Cosmo, Atom and Ceazar. Together, they conducted hundreds of searches for the Department as well as local and federal law enforcement agencies in the St. Louis and surrounding areas. They were responsible for locating and seizing millions of dollars’ worth of illegal drugs and drug proceeds. He demonstrated his canine partners’ abilities to detect illegal drugs at hundreds of public appearances throughout the St. Louis area. Additionally, canine Ceazar received recognition from the German Shepherd Dog Club of St. Louis as the “Outstanding Controlled Substance Detection Canine” for an unprecedented five consecutive years. As a detective, Captain Cox worked in every capacity in the Bureau of Drug Enforcement including a detachment to the Drug Enforcement Administration where he conducted illegal drug investigations that were prosecuted on the federal level. His investigations spanned the United States and on one occasion into Canada.
Captain Cox was promoted to the rank of sergeant in 2006 and was transferred Division of Patrol, Affton Southwest Precinct as a watch supervisor. In 2008, he was transferred to the Division of Operational Support, Bureau of Professional Standards where he conducted administrative investigations of alleged misconduct by Department employees. While assigned to the Bureau of Professional Standards, he also conducted and supervised the background investigations of police applicants.
In 2010, Captain Cox was promoted to the rank of lieutenant and was transferred to the Division of Patrol, South County Precinct where he served as a watch commander. In 2012, he was transferred to the Division of Criminal Investigation, Bureau of Drug Enforcement where he currently serves as the Deputy Commander of the Multi-Jurisdictional Drug Task Force. He was promoted to his current rank in May of 2014 and transferred to the Division of Operational Support to serve as Commander of the Bureau of Staff Services. In this position, Captain Cox is responsible for the management of the County Police administrative functions including Personnel Services, Planning and Analysis, Fiscal Services, Vehicle and Supply and Office Services.
Captain Cox has received more than 85 awards, commendations and letters of appreciation while serving on the St. Louis County Police Department.
When he is not at work, Captain Cox enjoys attending his daughters’ sporting events, and he is an avid outdoorsman.