Tri County Lock is a family operated full service locksmith & commercial door company with locations in North Aurora, St Charles and West Chicago. We work in the security industry so trust and safety are very important to us and our customers. We offer professional same day service at affordable rates. The technician who performs work at your home or office has over 18 years experience in the locksmith trade and has no criminal background. We are the key to your security. 

Safes Serviced
Locksmith for Safes 

Tri County Lock provides safe sales, installation & lockout opening service for residential and commercial safes. Some of our other services include electronic keypad locks, safe lock combination changes, drill open and repairs. Call us for any safe issues 

Automotive Locksmiths
Automotive Locksmiths

Did you lose keys to your car or motorcycle or just need a spare? We can help by sending a mobile locksmith out to you and professionally making a new chip key, remote or key fob programmed to your vehicle. Also motorcycle locks and keys serviced. Call us now!

Commercial Door & Frame Installations
Commercial Door & Frame Installations

Call us for a free quote on

professionally replacing your damaged steel door or frame. We service and replace commercial hollow metal doors and frames for all building and warehouse doors. Custom fabrication for any size door opening. Fire rated doors, wood doors & commercial hardware sold and installed for all applications.

Access Control Systems
Access Control Systems

Tri County Lock provides keyless security products for piece of mind. Let us professionally install your next keyless access control system. From mechanical cipher locks, electric strikes and standalone keypad locking systems for all types of doors, we are chicagolands premiere security locksmiths.

Commercial Locks
Commercial Locksmiths

Update your office security with a masterkey system or commercial keypad lock. We provide a wide variety of ADA commercial door hardware from panic bars, door closers and keyed lever locks, along with our professional installation. Choose us for your next commercial lock installation project.

Locked out Service & Non-Destructive Entry
Lockout Service &
Non-Destructive Entry

Locked out of your home, business or car? We provide you with fast locksmith service to get you in and out of trouble. Let us professionally gain entry into your home or auto through the lock without damaging the doors or other property that can result in high repair cost. Watch out for amateurs.



Residential Locks
Residential Locksmiths

Lost keys or just moving into a new home? No need to replace the locks, let Tri County Lock professionally re-key your home locks so the old key will no longer work. From home to business, we offer a wide variety of locksmith services like lock changes & installation, deadbolts and smart locks installed to help secure your home