Interstate Alarm Company

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Missoula, MT
Interstate Alarm Company

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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!

11/09/2026

What do you want to protect? Interstate Alarm Company can design a system that is just right for you and your needs, whether commercial or residential. Learn more here: https://www.interstatealarm.com/

11/08/2026

Feel safe and comfortable in your home with a security system from Interstate Alarm Company. Learn more here: https://www.interstatealarm.com/

11/07/2026

The Griz take on Portland State today in Washington Grizzly Stadium. Kickoff is at 1:00pm. 🏈

11/06/2026

Happy Friday!

11/06/2026

Check out one of our favorite customers Loula's Cafe in beautiful Whitefish, MT. The pies are amazing, but so is their breakfast and lunch!

11/03/2026

Give your guard dogs a break and enjoy peace of mind with a security system from Interstate Alarm Company 🐶🐶

11/02/2026

Happy Monday! Make it a great week everyone!

10/31/2026

From all of us here at Interstate Alarm Company have a safe and happy Halloween! 🎃 👻 🎃

10/31/2026

Turn clocks back one hour tonight before bed. 🕰️⏰ It's also a good reminder to test your smoke and carbon monoxide detectors.

10/31/2026

The Griz take on Eastern Washington in Cheney today. Kickoff is at 2:00 pm. 🏈

Address

Missoula, MT
59804

Telephone

+18003444546

Website

http://www.interstatealarm.com/

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