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NAICS 561621 is the North American Industry Classification System code for Security Systems Services (except Locksmiths), a national industry in the Security Systems Services NAICS industry (56162) of the Administrative and Support and Waste Management and Remediation Services sector (56).
Frequently asked questions
What is NAICS code 561621?
NAICS 561621 is the code for Security Systems Services (except Locksmiths), a national industry in the North American Industry Classification System (NAICS 2022), under 56162 (Security Systems Services). It is a 6-digit code, the most specific NAICS level.
What is the parent code of NAICS 561621?
The parent of NAICS 561621 is 56162, Security Systems Services. Every company under 561621 is also counted under 56162.