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Best Security System in Missouri (2026)

62 businesses found · Ranked by quality, not ads

Find top-rated security system businesses in Missouri. Every business is ranked by Quality Score — our quality metric based on responsiveness, data completeness, and verified reviews. Not who pays the most.

Secure24 Alarm Systems - ADT Authorized Dealer

Earth City, MO

Security System

★ 4.8(3348 reviews)

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Sentry Security Agency Inc

St. Louis, MO

Security System

★ 3.8(54 reviews)

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American Detection Specialists

Springfield, MO

Security System

★ 5.0(2 reviews)

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Jade Alarm Company

Kansas City, MO

Security System

★ 4.8(96 reviews)

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Safe Haven Security, ADT Authorized Dealer

North Kansas City, MO

Security System

★ 4.8(26312 reviews)

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Central States Security

Kansas City, MO

Security System

★ 5.0(13 reviews)

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Security Equipment, Inc.

North Kansas City, MO

Security System

★ 4.9(94 reviews)

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Watchmen Security Services

Raytown, MO

Security System

★ 4.7(120 reviews)

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Mobile Sound & Security “IGLA Expert”

Blue Springs, MO

Security System

★ 5.0(458 reviews)

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Kansas City CCTV & Security

Kansas City, MO

Security System

★ 4.4(7 reviews)

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Alarms & Tint KC

Independence, MO

Security System

★ 4.9(100 reviews)

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S.K. Security

Kansas City, MO

Security System

★ 4.6(110 reviews)

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Kenton Brothers Systems for Security

Kansas City, MO

Security System

★ 4.2(71 reviews)

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Security Data Supply of Kansas City

Riverside, MO

Security System

★ 5.0(18 reviews)

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St Louis Alarm Co

St Peters, MO

Security System

★ 5.0(72 reviews)

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ABF Security

Fenton, MO

Security System

★ 4.4(305 reviews)

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Westco Security & Technology Systems

Chesterfield, MO

Security System

★ 4.9(97 reviews)

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Citywide Alarms

St. Louis, MO

Security System

★ 4.8(127 reviews)

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iTrue Security

St. Louis, MO

Security System

★ 4.9(36 reviews)

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Advance Security & Technologies, LLC

University City, MO

Security System

★ 5.0(3 reviews)

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Interface Systems

St. Louis, MO

Security System

★ 4.1(129 reviews)

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ACF Alarm Company

St. Louis, MO

Security System

★ 4.8(44 reviews)

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DKstuf CCTV Mart

St. Louis, MO

Security System

★ 4.6(55 reviews)

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Central District Alarm Inc.

St. Louis, MO

Security System

★ 2.8(21 reviews)

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Burnes-Citadel Security

St. Louis, MO

Security System

★ 4.9(38 reviews)

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ADT Security Services

St. Louis, MO

Security System

★ 1.4(52 reviews)

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Philibert Security Systems, Inc.

Webster Groves, MO

Security System

★ 4.0(4 reviews)

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Alert 360 Home & Business Security Springfield

Springfield, MO

Security System

★ 4.8(143 reviews)

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BAS SECURITY

Springfield, MO

Security System

★ 3.3(12 reviews)

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ADT Security Services

Springfield, MO

Security System

★ 2.7(61 reviews)

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ADT Security Services

Springfield, MO

Security System

★ 1.7(18 reviews)

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Dynamic Custom Security

Springfield, MO

Security System

★ 5.0(1 review)

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Midwest Security

Springfield, MO

Security System

★ 3.5(4 reviews)

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Atronic Alarms

Springfield, MO

Security System

★ 4.8(47 reviews)

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Allied Universal® Security Services

Springfield, MO

Security System

★ 2.7(18 reviews)

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P.E.A.C.E Security Services

Springfield, MO

Security System

★ 4.8(4 reviews)

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Federal Protection

Springfield, MO

Security System

★ 4.7(45 reviews)

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Fortify, LLC

Springfield, MO

Security System

★ 5.0(15 reviews)

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NetWatch Inc

Nixa, MO

Security System

★ 4.8(39 reviews)

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Securitas Security Services USA

Springfield, MO

Security System

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Code 3 Security & Investigation

Springfield, MO

Security System

★ 5.0(4 reviews)

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Battlefield Mall Security

Springfield, MO

Security System

★ 3.6(9 reviews)

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ECAM

Springfield, MO

Security System

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Tech Electronics of Springfield

Springfield, MO

Security System

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GardaWorld

Springfield, MO

Security System

★ 3.0(2 reviews)

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Command Security & Sound LLC

Columbia, MO

Security System

★ 4.1(9 reviews)

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Alarm Communications Center

Columbia, MO

Security System

★ 4.3(9 reviews)

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Tiger Security Service

Columbia, MO

Security System

★ 4.3(12 reviews)

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Midway CSI

Columbia, MO

Security System

★ 4.0(4 reviews)

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Securitas Security Services USA

Columbia, MO

Security System

★ 3.0(8 reviews)

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