Investigation and Personal Background Check Services
NAICS 561611 is the North American Industry Classification System code for Investigation and Personal Background Check Services, part of the Administrative and Support and Waste Management and Remediation Services sector. In federal contracting every solicitation is tagged with a NAICS code, so if this is your line of work, 561611 is the code to register under in SAM.gov and to filter opportunities by.
Is your business “small” under NAICS 561611?
The SBA sets a size standard (a revenue or employee cap) for every NAICS code, and revises them periodically. Confirm the current threshold for 561611 with SBA’s official Size Standards Tool or its Table of Size Standards.
About this code
- Sector: Administrative and Support and Waste Management and Remediation Services (56)
- Code: 561611 — a six-digit NAICS 2022 national industry code
- Use it for: registering your business under in SAM.gov and filtering opportunities + set-asides
Related NAICS codes
Other six-digit codes in the same NAICS industry group (5616):
How to find & win Investigation and Personal Background Check Services contracts
NAICS 561611 is your discovery axis. Register under it in SAM.gov, then filter federal and state opportunities by this code and your set-asides. These step-by-step guides walk through it:
Search live Investigation and Personal Background Check Services (NAICS 561611) opportunities across SAM.gov and all 50 states — free.
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