Sheriff Marian Brown was sworn in as Sheriff of Dallas County on January 1, 2018. Sheriff Brown is the first African-American Sheriff in Dallas County and one of only five African-American female sheriffs in the United States.

Sheriff Brown began her career in law enforcement in 1988 with the Duncanville Police Department. She was a pioneer, in that she was the first African-American female hired by the Duncanville Police Department.

She quickly ascended in rank and was promoted to the rank of sergeant in 1993. While in that rank, she served as a first-line supervisor in the Patrol Division. In 1995, she was assigned to the Community Relations/Crime Prevention Division, tasked with creating a Community Oriented Policing Task Force. Through this unit, she formulated programs such as Citizens on Patrol and Duncanville Police Beat (a weekly information program hosted by Brown and broadcast on local cable.) Other programs managed by Brown included Citizens Police Academy; Seniors and Law Enforcement Together (SALT); Hand-in-Hand and Success Through Accepting Responsibility or STAR Program (a school-district-wide character education program implemented in ten elementary schools, three intermediate schools, and two junior highs. (Each school had an assigned officer to interact with students and emphasize the character trait each week.)

Sheriff Brown is known throughout the law enforcement community for her role as law enforcement trainer/anchor on the Law Enforcement Television Network (LETN), an international law enforcement satellite network based in Carrollton, Texas. Sheriff Brown worked with LETN for ten years while continuing her service with the Duncanville Police Department.

Brown continued to ascend in rank, serving in various capacities throughout the department, including criminal investigations.

In 2007, Brown was named to the position of Assistant Chief of Police. She served as Assistant Chief until 2014 when she retired and joined the Dallas County Sheriff’s Department as Chief Deputy in charge of General Services.

Brown served as a Chief Deputy for three years before she was named Sheriff.

  • Bachelors of Arts Degree — University of Texas at Arlington
  • Master Peace Officer Certification
  • Graduate of the International Law Enforcement Institute’s Management College
  • Graduate of the FBI National Academy Associates Command College