Tri County Lock is a family operated 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 15 years experience in the locksmith trade and has no criminal background. Commercial locks & steel door replacement is our specialty. Call Tri County Lock for a free quote today!

Safes Serviced
Locksmith for Safes 

Tri County Lock provides safe sales 

& opening service for residential and commercial customers. Electronic keypad lock conversions, safe lock combination changes, repairs and locked out of safe service for all safes.

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 man doors and warehouse doors. Custom fabrication for any size door opening. Also commercial wood doors & 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 lock hardware to magnetic locking systems for all types of doors, we are chicagolands premiere security locksmiths.

Commercial Locks
Commercial Locksmiths

Update your office security with a master key system or commercial electronic keypad or cypher locks. We provide a wide variety of ADA commercial hardware from panic bars, door closers and keyed lever locks, along with our professional installation. Choose us for your next commercial locksmith or door 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 so the old key will no longer work. From home to business locksmith we offer a wide variety services like locks changed, deadbolts and new keypad locks installed to help with your home security projects.