NAICS 56161in5616:Investigation and Security Services

Investigation, Guard, and Armored Car Services

268 active contract opportunities

268

Active Opportunities

242

Posted Last 7 Days

30 days

Avg Response Window

Top Industries

  • Security Guards and Patrol Services237
  • Investigation and Personal Background Check Services28
  • Armored Car Services3

Set-Aside Distribution

  • 149
  • No Set Aside44
  • Small Business31
  • SDVOSB21
  • SDVOSB Sole Source7

Top Locations

  • PA74
  • DC51
  • VA26
  • 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

Protective Security Officer Services

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

36C78626Q50098 - S206

VETERANS AFFAIRS, DEPARTMENT OF
QUANTICO, VA
NAICS 561612
Posted Jul 24, 2026
SDVOSB

MCIA Access Control Support

DEPT OF DEFENSE
QUANTICO, VA
NAICS 561612
Posted Jul 24, 2026
SDVOSB

LeadsOnline Database Services

DEPT OF DEFENSE
CAMP LEJEUNE, NC
NAICS 561611
Posted Jul 23, 2026
No Set Aside

Camp East Montana

HOMELAND SECURITY, DEPARTMENT OF
Washington, DC
NAICS 561612
Posted Jul 22, 2026

36C78626Q50131 - S206

VETERANS AFFAIRS, DEPARTMENT OF
QUANTICO, VA
NAICS 561612
Posted Jul 20, 2026
SDVOSB

Misawa Information Monitoring and Protection Services (IMPS) IDIQ Award Notice

DEPT OF DEFENSE
APO, AP
NAICS 561612
Posted Jul 10, 2026
No Set Aside

36C78626Q50073 - S206

VETERANS AFFAIRS, DEPARTMENT OF
QUANTICO, VA
NAICS 561612
Posted Jul 9, 2026
SDVOSB

US Mission Freetown

STATE, DEPARTMENT OF
WASHINGTON, DC
NAICS 561612
Posted Jul 8, 2026
No Set Aside

JOFOC for Personnel Security Support Services Bridge Contract

DEPT OF DEFENSE
QUANTICO, VA
NAICS 561611
Posted Jul 1, 2026

R430-URGENT Bridge Unarmed Security Contract for 6 Months

VETERANS AFFAIRS, DEPARTMENT OF
RIDGELAND, MS
NAICS 561612
Posted Jun 29, 2026

S-Folsom South Canal Security

INTERIOR, DEPARTMENT OF THE
SACRAMENTO, CA
NAICS 561612
Posted Jun 26, 2026

Prospect Harbor Space Force Station (PHSFS) Base Operations Support (BOS) Services, Prospect Harbor, Maine.

DEPT OF DEFENSE
SCHRIEVER SFB, CO
NAICS 561612
Posted Jun 26, 2026
Small Business

Overseas Guard Services U.S. Mission Abuja, Lagos/ Nigeria

STATE, DEPARTMENT OF
WASHINGTON, DC
NAICS 561612
Posted Jun 26, 2026
No Set Aside

Canine Explosive Support Services

TREASURY, DEPARTMENT OF THE
WASHINGTON, DC
NAICS 561612
Posted Jun 24, 2026
Small Business

Protective Security Officer (PSO) services at the Redstone Arsenal in Huntsville, AL

HOMELAND SECURITY, DEPARTMENT OF
PHILADELPHIA, PA
NAICS 561612
Posted Jun 23, 2026
8(a) Competed

Lower Granite Dam Increased Law Enforcement Patrols

DEPT OF DEFENSE
WALLA WALLA, WA
NAICS 561612
Posted Jun 16, 2026

US MiSSION VIENNA

STATE, DEPARTMENT OF
WASHINGTON, DC
NAICS 561612
Posted Jun 4, 2026
No Set Aside

Local Guard Force U.S. Mission Wellington, New Zealand

STATE, DEPARTMENT OF
WASHINGTON, DC
NAICS 561612
Posted Jun 4, 2026
No Set Aside

Canine (K9) Detection Role Player Support Services

DEPT OF DEFENSE
WASHINGTON, DC
NAICS 561612
Posted Jun 4, 2026
Small Business
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