Tri-State Security and Patrol Services

Tri-State Security and Patrol Services is the largest locally-owned security company in the Sioux Falls, South Dakota area. Our experienced team has been providing highly qualified security services, security patrol services and on-sight security guard services to businesses, events and properties in Sioux Falls for over 40 years. Our philosophy is to provide the highest quality security services and coverage to clientele with sophisticated demands. We offer a wide range of security services and can compete successfully for a contract of any size. Contact us for all your Sioux Falls security needs. Plus we are the only company in the state that offers bomb dog K9 service.