(314) 266-6760

Home & Business Security Company In St. Louis & St. Charles, MO

Whether you're a renter, homeowner or small business owner, Citywide Alarms has the perfect solution to suit all of your needs. Who says you can't have sophisticated home security equipment for an amazing price? Contact us today for a free estimate!

Protect Your Home Protect Your Business I Need Cameras Protect Your Parents
Contact Us For a Quote

Keep Your Home and Family Safe

Your home is where life happens. It’s where your family should always feel safe and secure. A professionally monitored security system from Citywide Alarms gives you that extra layer of protection and peace of mind. It’s a simple step that can make a big difference in how you live, day in and day out.
Explore Home Security

Protect What Keeps You in Business

Your business is built on hard work, and protecting it should never be left to chance. From break-ins to after-hours access, a professional security system from Citywide Alarms helps you stay ahead of threats. Whether you’re on site or away, you’ll know your property, equipment, and people are safe.
Secure Your Business

Smart Features That Keep You Fully Informed

Our security cameras deliver sharp, high-resolution video with advanced motion detection and infrared night vision—so you never miss a moment, day or night. Choose from flexible storage options, including secure cloud backup and on-site recording, and review footage anytime from your phone, tablet, or computer. Whether you’re protecting your home or business, our systems give you the visibility and peace of mind you need.
Explore Cameras

Proudly Serving St. Louis and Beyond

Citywide Alarms provides trusted security solutions throughout the St. Louis area and surrounding communities. Whether you’re in the city, the suburbs, or just outside the metro area, we’re ready to help you protect what matters most.
  • St. Louis
    7733 Forsyth Blvd. Suite 1100
    Saint Louis, MO 63105
  • St. Charles
    965 Sycamore Dr.
    St. Charles, MO 63304

Request A Quote

Don’t wait, get started today! No matter what type of security system you need, Citywide Alarms is here to help.

This field is for validation purposes and should be left unchanged.
First and Last name. Please include business name if necessary.
What security options are you looking for?(Required)