Skip to main content

Jefferson County Sheriff's Office

About Us

Serving Jefferson County with integrity, professionalism, and dedication.

Sheriff Reggie Marinelli in uniform
Sheriff

Reggie Marinelli

First Female Sheriff of Jefferson County

Sheriff Reggie Marinelli was sworn in as the 28th Sheriff of Jefferson County on January 10, 2023, making history as the first woman to hold this position. With over 30 years of dedicated service to the Jefferson County Sheriff's Office, Sheriff Marinelli brings a wealth of experience and leadership to the role.

Throughout her career, Sheriff Marinelli has served in every division of the Sheriff's Office. Her experience includes serving as a supervisor in all divisions and as commander of the West Metro Drug Task Force. She has been instrumental in developing programs that address the complex challenges facing modern law enforcement.

Key Initiatives

Behavioral Health Unit

Crisis intervention and mental health response

Veteran's Housing Unit

Supporting veterans in our detention facility

Moral Reconation Therapy

Cognitive-behavioral treatment for inmates

Community Partnerships

Building trust through engagement

Undersheriff

Mike Prange

Undersheriff Mike Prange is a thirty-plus-year veteran of law enforcement, serving most of that time serving the citizens of Jefferson County. He holds a master's degree in organizational management, and his undergraduate work was in computer information systems management. He has extensive managerial experience in detention and patrol operations, criminal investigations, recruitment, and training. As a manager in these areas, his experience extends to policy development, procedural effectiveness, training course development, internal investigations, business audits, the creation of accountability models, compliance with accreditation standards, and other laws and regulations.

Mike is recognized for his dedication to delivering high-quality, effective service and for fostering strong connections with residents and governmental partners. His leadership is grounded in integrity, collaboration, and transparency, and he is a passionate advocate for officer safety and overall well-being.

Mike is a veteran of the United States Air Force, which provided him a strong foundation for leadership and his commitment to service. He continues to enhance his leadership and is passionate about sharing his knowledge with others through teaching, mentoring, and coaching.

Undersheriff Mike Prange in uniform

Contact Directory

Find the right department for your needs. Click to expand for contact details.