Interstate Alarm Company

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Interstate Alarm Company We've been providing peace of mind to homes and businesses in Montana since 1972. In 1972, Interstate Alarm Company was incorporated.

Interstate Alarm Company Story

In the early 1970s, after getting out of the Navy and working for Seattle-based Grinnell-ADT, Butte-born “Spike” McQuiston wanted to get back to his roots. So he returned to Montana, settled in Missoula and joined together partners to start an alarm company/answering service/locksmith shop. When Spike passed away suddenly in 1993, his widow, Lynn, stepped in as the president and CEO of the company. Lynn's sons, Shawn and Josh joined the business and continue the company’s tradition of providing quality products, installations and customer service. We are Montana's oldest Alarm Company because we do it right!

Here at Interstate Alarm Company, we are sincerely grateful for the opportunity to serve you. We appreciate all of our c...
10/11/2026

Here at Interstate Alarm Company, we are sincerely grateful for the opportunity to serve you. We appreciate all of our customers and thank you for your business!

The Griz take on The Northern Arizona Lumberjacks today in Arizona. Kickoff is at 3:00pm. 🏈
10/10/2026

The Griz take on The Northern Arizona Lumberjacks today in Arizona. Kickoff is at 3:00pm. 🏈

Happy Friday!
10/09/2026

Happy Friday!

There's been an up-tick in burglary reports in our area. 🚓🚓 Unfortunately, some of them are from left open garages and u...
10/05/2026

There's been an up-tick in burglary reports in our area. 🚓🚓 Unfortunately, some of them are from left open garages and unlocked homes.️ Don't be an easy target for thieves. Considering a security system? We can design a system that is just right for you and your needs. 🔒Interstate Alarm Company has been providing peace of mind to homes and businesses in Montana since 1972.

As proud supporters of the Griz, we are super excited for Homecoming weekend! Check out the parade in downtown Missoula ...
10/03/2026

As proud supporters of the Griz, we are super excited for Homecoming weekend! Check out the parade in downtown Missoula Saturday morning at 10:00am. Game kickoff is at 2:00pm in Washington Grizzly stadium. 🏈 🐻

Looking for something fun to do tonight? On the first Friday of each month, galleries and local businesses host a variet...
10/02/2026

Looking for something fun to do tonight? On the first Friday of each month, galleries and local businesses host a variety of artists for a free art walk in downtown Missoula. Check it out!

Happy Friday!
10/02/2026

Happy Friday!

Breast cancer is the most commonly diagnosed cancer among women worldwide. The month of October aims to educate people, ...
10/01/2026

Breast cancer is the most commonly diagnosed cancer among women worldwide. The month of October aims to educate people, promote early detection and screening, and provide support for those affected by the disease. 🩷

Congrats to one of our favorite customers Good Food Store Missoula 🎉
10/01/2026

Congrats to one of our favorite customers Good Food Store Missoula 🎉

Secure your business with alarm and fire monitoring, access control systems, video surveillance services and much more! ...
09/29/2026

Secure your business with alarm and fire monitoring, access control systems, video surveillance services and much more! Interstate Alarm Company can create a system that is just right for you and your needs. Learn more here: https://www.interstatealarm.com/

Address

Missoula, MT
59804

Telephone

+18003444546

Website

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