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NAICS 561611 · Administrative and Support and Waste Management and Remediation Services

Investigation and Personal Background Check Services

5,519 contractors list NAICS 561611 (Investigation and Personal Background Check Services) in SAM.gov; 4,120 are small under its SBA size standard and 1,652 list it as their primary NAICS.

Learn more about NAICS size standards

Contractors (all registrations)
5,519
Small under 561611SBA size standard for this code
4,120
Primary NAICSTheir main line of business
1,652
Related industriesCodes these firms also list
8

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Size is NAICS-specific: a firm can be small under one code and other than small under another. Learn more about small business set-asides

Contractors listing NAICS 561611

Claimed profiles come first by membership level, then companies with 561611 as their primary NAICS, then federal obligations over the last 36 months. SPRS shows the highest blind bracket met, never the score. Learn more about blind SPRS brackets

Including excluded, expired and inactive SAM.gov registrations (flagged in the list). Excluded entities cannot receive federal awards or subcontracts. Hide them

Showing 1–20 of 5,519 contractors

Codes these contractors list most often alongside 561611: natural teaming adjacencies.