NAICS 561611 · Administrative and Support and Waste Management and Remediation Services
NAICS 561611: Investigation and Personal Background Check Services
This U.S. industry comprises establishments primarily engaged in providing investigation, detective, and personal background check services.
$25M receiptsSBA size standard
0open contracts now
11posted in the last 12 months
5616Investigation and Security Services
Open government contracts under NAICS 561611
Nothing is open under NAICS 561611 today. New solicitations post every day; search all open contracts or check back.
What NAICS 561611 covers
This U.S. industry comprises establishments primarily engaged in providing investigation, detective, and personal background check services.
Examples of work in this code:
Fingerprint services
Private detective services
Polygraph services
Private investigative services (except credit)
Not in this code
Establishments primarily engaged in providing credit checks are classified in Industry 561450, Credit Bureaus.
SBA size standard
A business is small under NAICS 561611 if it has no more than $25 million in average annual receipts (averaged over the last five completed fiscal years, including affiliates).
Source: SBA Table of Size Standards, effective 2023-03-17. Always check the size standard printed in the solicitation itself.
Who buys it
Departments that posted the most NAICS 561611 solicitations in the last two years:
Homeland Security · 4 solicitations
United States International Development Finance Corporation · 3 solicitations
Department of Defense · 2 solicitations
Veterans Affairs · 2 solicitations
Justice · 2 solicitations
Administrative Office of the US Courts · 2 solicitations
R699--Beneficiary Locator and Outreach Services · Veterans Affairs · posted August 18, 2026
Investigative Support Services · United States International Development Finance Corporation · Washington, D.C. · posted August 14, 2026
Print and Friction Ridge Examinations and Related Services · Homeland Security · Virginia · posted August 12, 2026
U.S. Customs and Border Protection Tracing and Payment Recovery Services (TPRS) · Homeland Security · posted August 6, 2026
Do this kind of work?
Send XL Eagle your price on an open investigation and personal background check services job. We write and submit the bid under our registrations. If we win, you do the work at your price. No fees.
NAICS 561611 is Investigation and Personal Background Check Services. This U.S. industry comprises establishments primarily engaged in providing investigation, detective, and personal background check services.
What is the SBA size standard for NAICS 561611?
The size standard for NAICS 561611 is $25 million in average annual receipts. Firms at or under it count as small businesses for contracts assigned this code.
Are there government contracts for investigation and personal background check services?
None are open under NAICS 561611 today, but 11 were posted in the last 12 months. New ones post daily.
Can I bid on NAICS 561611 contracts without registering in SAM.gov?
You need an active SAM.gov registration to win a federal contract in your own name. If you would rather skip that, XL Eagle can bid as the prime contractor using your price, and you do the work as our subcontractor.
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