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2026 Ranking

Best Security Companies in Denver

Ranking of the best private security companies in Denver, Colorado. The order prioritizes verified state licensing, track record and verified reviews; profile views and recommendations only fine-tune the order.

Verified state license Real user views 119 companies in Denver

We're still gathering recommendations and verified customer reviews in Denver. In the meantime, the order is based on license status and profile views.

Top-ranked companies in Denver

  1. 1
    1E

    1National Executive Security Services

    State Licensed
    Denver
    Security GuardsExecutive ProtectionEvent Security+8
    Get quotes in Denver
    Licensed
  2. 2
    1R

    1st Response Security LLC

    State Licensed
    Denver
    Security GuardsEvent SecurityResidential & HOA Security+7
    Get quotes in Denver
    Licensed
  3. 3
    2C

    21st century security services LLC

    State Licensed
    Denver
    Security GuardsEvent SecurityResidential & HOA Security+7
    Get quotes in Denver
    Licensed
  4. 4
    AS

    AA Security Group Inc.

    State Licensed
    Denver
    Security GuardsEvent SecurityResidential & HOA Security+7
    Get quotes in Denver
    Licensed
  5. 5
    AP

    Advanced Professional Security-CO, LLC

    State Licensed
    Denver
    Security GuardsEvent SecurityResidential & HOA Security+7
    Get quotes in Denver
    Licensed
  6. 6
    AS

    Advantage Security, Inc.

    State Licensed
    Denver
    Security GuardsEvent SecurityResidential & HOA Security+7
    Get quotes in Denver
    Licensed
  7. 7
    AD

    All Day Surveillance All Day Protection Services

    State Licensed
    Denver
    Security GuardsExecutive ProtectionEvent Security+8
    Get quotes in Denver
    Licensed
  8. 8
    AP

    All Pro Security

    State Licensed
    Denver
    Security GuardsEvent SecurityResidential & HOA Security+7
    Get quotes in Denver
    Licensed
  9. 9
    AS

    Allegiance Security Control LLC

    State Licensed
    Denver
    Security GuardsEvent SecurityResidential & HOA Security+7
    Get quotes in Denver
    Licensed
  10. 10
    AS

    AlphaWill Security Services LLC

    State Licensed
    Denver
    Security GuardsEvent SecurityResidential & HOA Security+7
    Get quotes in Denver
    Licensed

All state licensed security companies in Denver

119 companies with a verified, active state license, ranked by track record and reputation. All checked against official license records.

  1. 11American Guard Services State Licensed· Security Guards
  2. 12American Hawk Security LLC State Licensed· Security Guards
  3. 13Apex Guardian Network LLC State Licensed· Security Guards
  4. 14Ares Protection Inc. State Licensed· Security Guards
  5. 15ARES SECURITY LLC State Licensed· Security Guards
  6. 16Assuring Security Inc State Licensed· Security Guards
  7. 17Battle Tested Security LLC State Licensed· Security Guards
  8. 18BattleKat Security and Asset Protection State Licensed· Security Guards
  9. 19Bellator Defense LLC State Licensed· Security Guards
  10. 20Blackstone Security Services of Colorado, Inc State Licensed· Security Guards
  11. 21Blue Line Protection Group Incorporated State Licensed· Security Guards
  12. 22Brooks Protection LLC State Licensed· Security Guards
  13. 23Byers K9 Services LLC State Licensed· Security Guards
  14. 24C Squared Security Services, LLC State Licensed· Security Guards
  15. 25Calian Protective Services State Licensed· Security Guards
  16. 26Charlie Mike Protective Services State Licensed· Security Guards
  17. 27Citadel Security Group LLC State Licensed· Security Guards
  18. 28Code 4 Security Services, LLC State Licensed· Security Guards
  19. 29Colorado Protection Services, LLC State Licensed· Security Guards
  20. 30Colorado Refugee and Immigrant Security Service, Inc. State Licensed· Security Guards
  21. 31COLORADO SECURITY SOLUTIONS, LLC State Licensed· Security Guards
  22. 32Concierge Security LLC State Licensed· Security Guards
  23. 33Covenant Aviation Security, LLC State Licensed· Security Guards
  24. 34Crisis24 Protective Solutions, INC State Licensed· Security Guards
  25. 35Critical Asset Defense Agency LLC State Licensed· Security Guards
  26. 36CROWN SECURITY SERVICES State Licensed· Security Guards
  27. 37D&P Security LLC State Licensed· Security Guards
  28. 38DC Private Investigations and Security Consultants State Licensed· Security Guards
  29. 39Denver Metro Security Inc. State Licensed· Security Guards
  30. 40Denver Platinum Protection Group State Licensed· Security Guards
  31. 41Denver's Finest Security, LLC. State Licensed· Security Guards
  32. 42DESOUZA PROTECTIVE SERVICES LLC State Licensed· Security Guards
  33. 43Doubles Protective Services State Licensed· Security Guards
  34. 44Dream Lite Security Services LLC State Licensed· Security Guards
  35. 45Elevate1 Security Company LLC State Licensed· Security Guards
  36. 46ELITE GUARD State Licensed· Security Guards
  37. 47Elite Security Group, Inc. State Licensed· Security Guards
  38. 48Esprit De Security Services, Inc State Licensed· Security Guards
  39. 49EXL Terminated Security Guards State Licensed· Security Guards
  40. 50Force Enforment Security LLC State Licensed· Security Guards
See the remaining 69 licensed companies in the directory

Ranking methodology

The order reflects real, verifiable signals that are hard to manipulate. Companies with a verified state license appear first; within that group we prioritize the best-reviewed (verified reviews) and the most established according to official records. Profile views and community recommendations only fine-tune the order — a couple of votes can't move positions. For each company we show exactly which signals back its position.

  • State license — we verify each active license against state licensing boards like California BSIS and Illinois IDFPR. Licensed companies appear first.
  • Real profile views — how many people viewed the company's profile over the last 30 days.
  • Community recommendations — user votes with anti-fraud controls (fingerprint dedup).
  • Verified customer reviews — customer rating and review volume, when available.

Looking for more options in Denver?

Browse the complete directory with all 119 private security companies listed in Denver, filter by service type and compare pricing.

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Security services in Denver

Security Guards en DenverArmed Security Guards en DenverMobile Patrol en DenverEvent Security en DenverFire Watch Services en DenverExecutive Protection en DenverK9 Security en DenverLoss Prevention & Retail Security en DenverCorporate Security en DenverWarehouse & Industrial Security en DenverResidential & HOA Security en DenverConstruction Site Security en DenverAlarm Monitoring en DenverVideo Surveillance & CCTV en DenverAccess Control en DenverPrivate Investigation en DenverArmored Transport & Cash-in-Transit en DenverSecurity Consulting en Denver

More about private security in Denver

Directory of DenverAll security companies, with search and pagination.State Licensed in DenverOnly companies with an active state license.
See all security companies in Colorado

Frequently asked questions

What are the best private security companies in Denver?
Top companies in Denver include 1National Executive Security Services, 1st Response Security LLC, 21st century security services LLC, AA Security Group Inc., Advanced Professional Security-CO, LLC, based on their active state license and the volume of profile views and community recommendations on HireSecurityNow.com. The order updates continuously based on these signals.
How is the ranking of security companies in Denver determined?
Companies with a verified, active state license appear first, checked against official licensing board records like California BSIS and Illinois IDFPR. Within that group, the order reflects real profile views over the last 30 days, community recommendations (with anti-fraud controls) and verified customer reviews when available.
Are the ranked companies state licensed?
We verify each company's license status against official state licensing board records. Each company's profile shows its license number and status when it holds an active license.
How do I hire one of these companies in Denver?
You can get free quotes from any company in the ranking: open its profile, submit a quote request with your requirements and you'll receive proposals directly. All quotes are free and come with no obligation.
How many security companies are listed in Denver?
Our directory lists 119 companies in Denver, Colorado. You can browse the complete list in the Denver security companies directory.