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
211111 Crude Petroleum and Natural Gas Extraction
211112 Natural Gas Liquid Extraction
212111 Bituminous Coal and Lignite Surface Mining
212112 Bituminous Coal Underground Mining
212113 Anthracite Mining
212210 Iron Ore Mining
212221 Gold Ore Mining
212222 Silver Ore Mining
212231 Lead Ore and Zinc Ore Mining
212234 Copper Ore and Nickel Ore Mining
212291 Uranium-Radium-Vanadium Ore Mining
212299 All Other Metal Ore Mining
212311 Dimension Stone Mining and Quarrying
212312 Crushed and Broken Limestone Mining and Quarrying
212313 Crushed and Broken Granite Mining and Quarrying
212319 Other Crushed and Broken Stone Mining and Quarrying
212321 Construction Sand and Gravel Mining
212322 Industrial Sand Mining
212391 Potash,Soda,and Borate Mineral Mining
212392 Phosphate Rock Mining
212399 All Other Nonmetallic Mineral Mining
213111 Drilling Oil and Gas Wells
213112 Support Activities for Oil and Gas Operations
213113 Support Activities for Coal Mining
213114 Support Activities for Metal Mining
213115 Support Activities for Nonmetallic Minerals (except Fuels)

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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