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NAICS
NAICS Codes

Official North American industry classification system for business reporting and analysis.

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SIC Codes

Established U.S. industry classification system widely used across business, reporting, analytics, and cross-dataset comparability.

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Code Systems
Code Systems

Standard classification systems used to organize industries, products, occupations, and business identifiers across U.S. and global datasets

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What Is a NAICS 8-Digit Code?
All NAICS SIC Companies
SIC 6-Digit NAICS 8-Digit ISIC (International) NACE (Europe) SOC (Occupations) CIP (Programs) Extended SOC (O*NET)

NAICS 8-Digit Codes for "naics:5612"

Extended NAICS codes provide more specific industry categories within official 6-digit NAICS classifications, supporting more precise industry segmentation, market research, and business targeting. For official NAICS classification, use the 6-digit NAICS code.

Search this keyword in SIC 6-Digit codes.

companies

Verified U.S. companies available for purchase in this industry. Counts are based on primary business classifications.

Industry NAICS 8-Digit U.S. companies Add

Aerospace Support Services-Technical

Parent: Facilities Support Services

 Extended NAICS 561210-01 companies 44companies

Correctional Institutions-Private

Parent: Facilities Support Services

 Extended NAICS 561210-02 companies 174companies

Facilities Management

Parent: Facilities Support Services

 Extended NAICS 561210-03 companies 326companies

Facilities Support Management Services

Parent: Facilities Support Services

 Extended NAICS 561210-04 companies 783companies

Directory Enquiries

Parent: Facilities Support Services

 Extended NAICS 561210-05 companies 4companies

Other classifications

Search "naics:5612" in SIC 6-Digit codes →

Sources & methodology

NAICS definitions: U.S. Census Bureau, 2022

SIC definitions: OSHA SIC Manual

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