The North American Industry Classification System (NAICS, pronounced Nakes) was developed as the standard for use by Federal statistical agencies in classifying business establishments for the collection, analysis, and publication of statistical data related to the business economy of the U.S. NAICS was developed under the auspices of the Office of Management and Budget (OMB), and adopted in 1997 to replace the old Standard Industrial Classification (SIC) system. It was also developed in cooperation with the statistical agencies of Canada and Mexico to establish a 3-country standard that allows for a high level of comparability in business statistics among the three countries. NAICS is the first economic classification system to be constructed based on a single economic concept.

NAICS Code Description
561110 Office Administrative Services
561210 Facilities Support Services
561311 Employment Placement Agencies
561312 Executive Search Services
561421 Telephone Answering Services
561439 Other Business Service Centers (including Copy Shops)
561440 Collection Agencies
561450 Credit Bureaus
561491 Repossession Services
561510 Travel Agencies
561520 Tour Operators
561599 All Other Travel Arrangement and Reservation Services
561621 Security Systems Services (except Locksmiths)
561622 Locksmiths
561710 Exterminating and Pest Control Services
561720 Janitorial Services
561730 Landscaping Services
561740 Carpet and Upholstery Cleaning Services
561790 Other Services to Buildings and Dwellings
561990 All Other Support Services
562910 Remediation Services
562991 Septic Tank and Related Services
562998 All Other Miscellaneous Waste Management Services

The SIC covers the entire field of economic activities by defining industries in accordance with the composition and structure of the economy. Over the years, it was revised periodically to reflect the economy's changing industry composition and organization. The Office of Management and Budget (OMB) last updated the SIC in 1987.


SIC Industry Groups

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