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

Investigation and Personal Background Check Services

5,456 active contractors list NAICS 561611 (Investigation and Personal Background Check Services) in SAM.gov; 4,106 are small under its SBA size standard and 1,629 list it as their primary NAICS.

Learn more about NAICS size standards

Active contractors
5,456
Small under 561611SBA size standard for this code
4,106
Primary NAICSTheir main line of business
1,629
Hidden registrationsExcluded, expired or inactive
63

Work this industry

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

63 registrations hidden because they are excluded, expired or inactive in SAM.gov. Include them

Showing 5,141–5,160 of 5,456 contractors

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