Interstate Alarm Company

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!

Happy Friday!
05/29/2026

Happy Friday!

Alarm system "packages" aren't for everyone. Interstate Alarm Company makes it easy and affordable for you. Learn more h...
05/28/2026

Alarm system "packages" aren't for everyone. Interstate Alarm Company makes it easy and affordable for you. Learn more here: https://www.interstatealarm.com/

If this is on your wish list, it's time to give us a call. Interstate Alarm Company has been providing peace of mind to ...
05/27/2026

If this is on your wish list, it's time to give us a call. Interstate Alarm Company has been providing peace of mind to homes and businesses in Montana since 1972.

Today, we pause to express our deepest gratitude to those who serve and have served. From all of us here at Interstate A...
05/25/2026

Today, we pause to express our deepest gratitude to those who serve and have served. From all of us here at Interstate Alarm Company, our sincerest thanks

Grab a cold beverage and enjoy the beautiful scenery at one of our favorite customers Draught Works Brewery
05/23/2026

Grab a cold beverage and enjoy the beautiful scenery at one of our favorite customers Draught Works Brewery

Interstate Alarm Company has been providing peace of mind to homes and businesses in Montana since 1972. We can design a...
05/23/2026

Interstate Alarm Company has been providing peace of mind to homes and businesses in Montana since 1972. We can design 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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