NAICS codes / 561611
NAICS 561611: Investigation and Personal Background Check Services — open federal opportunities
14 open notices on SAM.gov. Top buyers: JUSTICE, DEPARTMENT OF (9), DEPT OF DEFENSE (3), POSTAL SERVICE (1), ADMINISTRATIVE OFFICE OF THE US COURTS (1).
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Request for Information - DCSA Personnel Vetting (PV) Fieldwork Services Requirement
DEPT OF DEFENSE · DEFENSE COUNTERINTELLIGENCE AND SECURITY AGENCY (DCSA) · Sources Sought · posted Oct 27, 2026
USPS EEO INVESTIGATOR SERVICES - OCTOBER 2026 SOLICITATION
POSTAL SERVICE · POSTAL SERVICE · Solicitation · posted Oct 26, 2026
Fingerprint Services
DEPT OF DEFENSE · DEPT OF THE NAVY · Special Notice · posted Oct 26, 2026
Request for Information - DCSA Personnel Vetting (PV) Fieldwork Services Requirement
DEPT OF DEFENSE · DEFENSE COUNTERINTELLIGENCE AND SECURITY AGENCY (DCSA) · Sources Sought · posted Oct 23, 2026
Forensic Polygraph services
ADMINISTRATIVE OFFICE OF THE US COURTS · ADMINISTRATIVE OFFICE OF THE US COURTS · Solicitation · posted Oct 9, 2026
Field, Background-Investigative Services (Multiple Award)
JUSTICE, DEPARTMENT OF · ATF ACQUISITION AND PROPERTY MGMT DIV · Combined Synopsis/Solicitation · posted Sep 12, 2025
Field, Background-Investigative Services (Multiple Award)
JUSTICE, DEPARTMENT OF · ATF ACQUISITION AND PROPERTY MGMT DIV · Combined Synopsis/Solicitation · posted Jul 18, 2025
Field, Background-Investigative Services (Multiple Award)
JUSTICE, DEPARTMENT OF · ATF ACQUISITION AND PROPERTY MGMT DIV · Combined Synopsis/Solicitation · posted Jul 15, 2025
Field, Background-Investigative Services (Multiple Award)
JUSTICE, DEPARTMENT OF · ATF ACQUISITION AND PROPERTY MGMT DIV · Combined Synopsis/Solicitation · posted Jul 14, 2025
Field, Background-Investigative Services (Multiple Award)
JUSTICE, DEPARTMENT OF · ATF ACQUISITION AND PROPERTY MGMT DIV · Combined Synopsis/Solicitation · posted Jun 25, 2025
Field, Background-Investigative Services (Multiple Award)
JUSTICE, DEPARTMENT OF · ATF ACQUISITION AND PROPERTY MGMT DIV · Combined Synopsis/Solicitation · posted Jun 16, 2025
Field, Background-Investigative Services (Multiple Award)
JUSTICE, DEPARTMENT OF · ATF ACQUISITION AND PROPERTY MGMT DIV · Combined Synopsis/Solicitation · posted Jun 16, 2025
Field, Background-Investigative Services
JUSTICE, DEPARTMENT OF · ATF ACQUISITION AND PROPERTY MGMT DIV · Combined Synopsis/Solicitation · posted Jun 16, 2025
Field, Background-Investigative Services (Multiple Award)
JUSTICE, DEPARTMENT OF · ATF ACQUISITION AND PROPERTY MGMT DIV · Combined Synopsis/Solicitation · posted Jun 16, 2025
Related NAICS codes (industry group 5616)
- 561621 Security Systems Services (except Locksmiths) (34 open)
- 561612 Security Guards and Patrol Services (26 open)
- 561613 Armored Car Services (1 open)
How NAICS codes decide small business size: NAICS codes for small business · notice types explained · set-asides