Requirements For a St. Louis County Security Officer's License


Private security officer jobs offer job security, good pay, flexible working hours and opportunities for advancement. There are different types of security officers and one of these is bound to be right for you depending on your interests, goals and qualifications. In St. Louis County, the training, licensing and supervision of private security officers are the joint responsibilities of the Metropolitan Police Department of the City of St. Louis and the St. Louis County Police Department. Generally, it is the employing company that will select to which of the two agencies an applicant should apply.


  • A watchman performs the basic duties of patrolling and observation. This person is not authorized to carry weapons or other protective devices, such as mace and/or a baton, and does not have the powers of search, detention and arrest. The watchman must report suspicious activity to a police officer or security officer and must wear an approved uniform when on duty.


  • A courier is a person who protects and delivers property from one location to another. Like the watchman, a courier does not have the powers of search, detention, and arrest and must wear a military style uniform when on duty. However, unlike the watchman, a courier may carry a firearm if licensed under state law to do so.

Security Officer

  • A person with certain police powers who is charged with protecting persons and property within a designated area or on a particular property. A security officer's powers exist only when on duty and only on the assigned premises. Unlike a police officer, a security officer's police powers end when his or her shift ends. A security officer may carry weapons and protective devices if authorized to do so by state law.

Corporate Security Advisor

  • A security officer has broad powers for the protection and security of his or her employer's personnel and resources. Such powers may be exercised within the city and county of St. Louis, but only while on duty and in furtherance of the employer's business.

Basic Requirements

  • At least 21 years of age or at least 18 for a watchman
    U.S. citizen or legal resident alien
    No felony convictions
    Free of any type of chemical dependency

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