Locally owned. Owner-answered. Always on.
Tri-State Security & Patrol is a Sioux Falls-based security company built by working operators, not a corporate franchise.
Security that answers to you.
We started Tri-State because Sioux Falls businesses deserve a security partner who actually knows the property, the neighborhood, and the people involved. Not a call center. Not a franchise. A local team, on the ground, on call.
Today we protect commercial properties, events, construction sites, and executives across South Dakota, northwest Iowa, and southwest Minnesota — and we're the only for-hire bomb-sniffing dog service in the state.
The only K9 explosive detection team in South Dakota.
Our certified handler teams provide venue sweeps, ongoing facility screening, and event coverage for clients who can't afford a "maybe."
- Fully licensed & insured
South Dakota licensed, comprehensive liability coverage.
- W-2 officers, not contractors
Every officer is background-checked, trained, and employed by us.
- 24/7 real-person dispatch
No call trees — a local dispatcher, every hour of every day.
- Tri-state coverage
Sioux Falls home base, active across three states.
Get a free security consultation.
Tell us about your property. We'll walk the site, listen, and put together a plan — no obligation.