NAICS 56161in5616:Investigation and Security Services

Investigation, Guard, and Armored Car Services

246 active contract opportunities

246

Active Opportunities

217

Posted Last 7 Days

30 days

Avg Response Window

Top Industries

  • Security Guards and Patrol Services217
  • Investigation and Personal Background Check Services26
  • Armored Car Services3

Set-Aside Distribution

  • 145
  • No Set Aside35
  • Small Business31
  • SDVOSB17
  • SDVOSB Sole Source7

Top Locations

  • PA72
  • DC43
  • VA22
  • ID16
  • MD12

About NAICS56161

The North American Industry Classification System (NAICS) code 56161 covers investigation, guard, and armored car services. Federal agencies use NAICS codes to classify contracts by industry. Businesses should register their applicable NAICS codes in SAM.gov.

SAM.gov Registration →|Set-Aside Programs →

Related Industries

56111:Office Administrative Services56121:Facilities Support Services56131:Employment Placement Agencies ...56132:Temporary Help Services56133:Professional Employer Organiza...56141:Document Preparation Services

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JUSTICE, DEPARTMENT OF
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SSA HQ, NSC, WBDOC, SSC/RTP Guards Contract

SOCIAL SECURITY ADMINISTRATION
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U.S. Customs and Border Protection Tracing and Payment Recovery Services (TPRS)

HOMELAND SECURITY, DEPARTMENT OF
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Posted Aug 17, 2026
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HOMELAND SECURITY, DEPARTMENT OF
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U.S. Customs and Border Protection Tracing and Payment Recovery Services (TPRS)

HOMELAND SECURITY, DEPARTMENT OF
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Posted Aug 17, 2026
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HOMELAND SECURITY, DEPARTMENT OF
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No Set Aside

Sea-Based X-Band Radar (SBX-1) Security Services

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NAICS 561612
Posted Aug 11, 2026
Due Aug 26, 2026
8(a) Set-Aside

Contract Security Officer (CSO) (Armed/Unarmed) Support Services

DEPT OF DEFENSE
WASHINGTON, DC
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R430-Fire Guard Services for SAVAHCS POP: 09/01/2026 - 08/31/2029

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Sources Sought - U.S. Mission Lilongwe, Malawi

STATE, DEPARTMENT OF
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Posted Aug 3, 2026
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Construction Security Services NIWDC

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Posted Jul 31, 2026
Small Business Set Aside - Total

FE Walter Dam Law Enforcement Contract

DEPT OF DEFENSE
PHILADELPHIA, PA
NAICS 561612
Posted Jul 30, 2026
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Protective Security Officer Services

HOMELAND SECURITY, DEPARTMENT OF
PHILADELPHIA, PA
NAICS 561612
Posted Jul 27, 2026

36C78626Q50098 - S206

VETERANS AFFAIRS, DEPARTMENT OF
QUANTICO, VA
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Posted Jul 24, 2026
SDVOSB
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