NAICS Codes
To learn more about NAICS Codes, please visit the official government site www.census.gov/naics.
The North American Industry Classification System (NAICS) is the standard used by Federal statistical agencies in classifying business establishments for the purpose of collecting, analyzing, and publishing statistical data related to the U.S. business economy.
NAICS was developed under the auspices of the Office of Management and Budget (OMB), and adopted in 1997 to replace the Standard Industrial Classification (SIC) system. It was developed jointly by the U.S. Economic Classification Policy Committee (ECPC), Statistics Canada, and Mexico’s Instituto Nacional de Estadistica y Geografia, to allow for a high level of comparability in business statistics among the North American countries.
This official U.S. Government Web site provides the latest information on plans for NAICS revisions, as well as access to various NAICS reference files and tools. Additional information on the background and development of NAICS is available in the
section of this Web site.
December 21, 2021 [PDF, 203KB] North American Industry Classification System—Revision for 2022; Update of Statistical Policy Directive No. 8, North American Industry Classification System: Classification of Establishments; and Elimination of Statistical Policy Directive No. 9, Standard Industrial Classification of Enterprises; Notice. Vol. 86, No. 242
| NAICS CODE | PRIMARY | DESCRIPTION |
|---|---|---|
| 221113 | – | Nuclear Electric Power Generation |
| 221320 | Sewage Treatment Facilities | |
| 236220 | Commercial and Institutional Building Construction | |
| 237110 | Water and Sewer Line and Related Structures Construction | |
| 237120 | Oil and Gas Pipeline and Related Structures Construction | |
| 237130 | Power and Communication Line and Related Structures Construction | |
| 237210 | Land Subdivision | |
| 237310 | Highway, Street, and Bridge Construction | |
| 237990 | Other Heavy and Civil Engineering Construction | |
| 238910 | Site Preparation Contractors | |
| 333613 | Mechanical Power Transmission Equipment Manufacturing | |
| 335311 | Power, Distribution, and Specialty Transformer Manufacturing | |
| 336510 | Railroad Rolling Stock Manufacturing | |
| 482111 | Line-Haul Railroads | |
| 482112 | Short Line Railroads | |
| 486210 | Pipeline Transportation of Natural Gas | |
| 488111 | Air Traffic Control | |
| 488119 | Other Airport Operations | |
| 488210 | Support Activities for Rail Transportation | |
| 541310 | Architectural Services | |
| 541320 | Landscape Architectural Services | |
| 541330 | YES | Engineering Services |
| 541360 | Geophysical Surveying and Mapping Services | |
| 541611 | Administrative Management and General Management Consulting Services | |
| 541620 | Environmental Consulting Services | |
| 541990 | All Other Professional, Scientific, and Technical Services | |
| 561210 | Facilities Support Services | |
| 562211 | Hazardous Waste Treatment and Disposal | |
| 611512 | Flight Training |