NAICS 561611 - Investigation and Personal Background Check Services

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What is NAICS 561611

NAICS code 561611 covers establishments primarily engaged in providing investigation, detective, and personal background check services. Businesses operating in this sector offer a range of services including fingerprinting, polygraph examinations, and private investigative work excluding credit investigations. These services are essential for verifying the backgrounds and credentials of individuals in both private and public sectors. Government agencies rely on these services to ensure security, compliance, and integrity in their workforce and contractor selections. The investigative services under this code support law enforcement, regulatory compliance, and risk management efforts, often involving sensitive and confidential information.

Industry Classification for NAICS 561611

This U.S. industry comprises establishments primarily engaged in providing investigation, detective, and personal background check services.

Illustrative Examples:

  • Fingerprint services
  • Private detective services
  • Polygraph services
  • Private investigative services (except credit)

Breakdown for NAICS 561611

  • Includes establishments providing investigation, detective, and personal background check services.
  • Excludes credit investigative services, which fall under a different NAICS code.
  • Supports government and private sector needs for security and personnel verification.
  • Small business size standard typically set at $16.5 million in annual receipts.
  • Services often involve sensitive and confidential information handling.
  • Includes fingerprinting and polygraph services as specialized investigative methods.

Included Activities for NAICS 561611

  • Conducting personal and criminal background checks for government personnel and contractors.
  • Providing fingerprinting services for identity verification and security clearances.
  • Performing polygraph examinations as part of security and investigative processes.
  • Executing private investigative services such as surveillance and information gathering.
  • Supporting law enforcement and regulatory agencies with specialized investigative assistance.
  • Verifying credentials and employment history for government hiring and contracting.
  • Delivering fraud investigations and internal security assessments.
  • Collecting and analyzing evidence relevant to security and compliance investigations.

Business Types for NAICS 561611

  • Private detective agencies
  • Background screening firms
  • Fingerprinting service providers
  • Polygraph examination companies
  • Security and risk management consultants
  • Investigative service subcontractors

Subcategories for NAICS 561611

  • Background check services
  • Bounty hunting services
  • Detective agencies
  • Fingerprint services
  • Investigation services (except credit), private
  • Investigators, private
  • Lie detection services
  • Missing person tracing services
  • Polygraph services
  • Private detective services
  • Private investigation services (except credit)
  • Skip tracing services

Government Buyers for NAICS 561611

Federal, state, and local government agencies are the primary buyers of services under NAICS 561611. Agencies such as the Department of Homeland Security, Federal Bureau of Investigation, Department of Defense, and various law enforcement and regulatory bodies contract these services to conduct thorough background checks, employee screening, and security investigations. These agencies require reliable investigative services to mitigate risks, uphold safety standards, and verify personnel credentials in sensitive or high-security environments. Additionally, government contractors may also engage these services to comply with federal regulations and security requirements.

Contract Types & Procurement for NAICS 561611

Contracts for NAICS 561611 services typically include firm-fixed-price, time-and-materials, and task order contracts under multiple-award contracts or General Services Administration (GSA) schedules. Procurement methods range from competitive bidding to sole-source awards, depending on sensitivity and urgency. Contract values vary widely based on the scope and complexity of investigations but often range from modest task orders for background checks to multi-million-dollar contracts for extensive investigative services. Performance-based contracting is common to ensure quality and timely delivery of sensitive investigative results.

Details for NAICS 561611

Explore the hierarchy and related codes for this industry

NAICS Code Industry Title
561 Administrative and Support Services
5611 Office Administrative Services
56111 Office Administrative Services
561110 Office Administrative Services
5612 Facilities Support Services
56121 Facilities Support Services
561210 Facilities Support Services
5613 Employment Services
56131 Employment Placement Agencies and Executive Search Services
561311 Employment Placement Agencies
561312 Executive Search Services
56132 Temporary Help Services
561320 Temporary Help Services
56133 Professional Employer Organizations
561330 Professional Employer Organizations
5614 Business Support Services
56141 Document Preparation Services
561410 Document Preparation Services
56142 Telephone Call Centers
561421 Telephone Answering Services
561422 Telemarketing Bureaus and Other Contact Centers
56143 Business Service Centers
561431 Private Mail Centers
561439 Other Business Service Centers (including Copy Shops)
56144 Collection Agencies
561440 Collection Agencies
56145 Credit Bureaus
561450 Credit Bureaus
56149 Other Business Support Services
561491 Repossession Services
561492 Court Reporting and Stenotype Services
561499 All Other Business Support Services
5615 Travel Arrangement and Reservation Services
56151 Travel Agencies
561510 Travel Agencies
56152 Tour Operators
561520 Tour Operators
56159 Other Travel Arrangement and Reservation Services
561591 Convention and Visitors Bureaus
561599 All Other Travel Arrangement and Reservation Services
5616 Investigation and Security Services
56161 Investigation, Guard, and Armored Car Services
561611 Current Investigation and Personal Background Check Services
561612 Security Guards and Patrol Services
561613 Armored Car Services
56162 Security Systems Services
561621 Security Systems Services (except Locksmiths)
561622 Locksmiths
5617 Services to Buildings and Dwellings
56171 Exterminating and Pest Control Services
561710 Exterminating and Pest Control Services
56172 Janitorial Services
561720 Janitorial Services
56173 Landscaping Services
561730 Landscaping Services
56174 Carpet and Upholstery Cleaning Services
561740 Carpet and Upholstery Cleaning Services
56179 Other Services to Buildings and Dwellings
561790 Other Services to Buildings and Dwellings
5619 Other Support Services
56191 Packaging and Labeling Services
561910 Packaging and Labeling Services
56192 Convention and Trade Show Organizers
561920 Convention and Trade Show Organizers
56199 All Other Support Services
561990 All Other Support Services
562 Waste Management and Remediation Services
5621 Waste Collection
56211 Waste Collection
562111 Solid Waste Collection
562112 Hazardous Waste Collection
562119 Other Waste Collection
5622 Waste Treatment and Disposal
56221 Waste Treatment and Disposal
562211 Hazardous Waste Treatment and Disposal
562212 Solid Waste Landfill
562213 Solid Waste Combustors and Incinerators
562219 Other Nonhazardous Waste Treatment and Disposal
5629 Remediation and Other Waste Management Services
56291 Remediation Services
562910 Remediation Services
56292 Materials Recovery Facilities
562920 Materials Recovery Facilities
56299 All Other Waste Management Services
562991 Septic Tank and Related Services
562998 All Other Miscellaneous Waste Management Services

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