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This is the 2020 Census redirect
This is the 2020 Census redirect
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North American Industry Classification System
You are here: Census.gov › Business & Industry › NAICS › History
This Javascript highlights what section of the main navigation you are on and unlinks its URL.NAICS Search:
Reference Files
- 2017 NAICS
- 2012 NAICS
- 2007 NAICS
- 2002 NAICS
- 1997 NAICS
- Concordances
- Downloadable Files
- NAICS Update Process Fact Sheet [PDF, 106KB]
Contact Us
History of NAICS - Early Development Documents
Issue Papers Relating to Industry Classification
- Issues Paper No. 1, "Conceptual Issues" [PDF, 3.78MB]
- Issues Paper No. 2, "Aggregation Stuctures and Heirarchies" [PDF, 1.92MB]
- Public Comments on Issues Papers No. 1 & 2 [PDF, 532KB]
- Issues Paper No. 3, "Collectability of Data" [PDF, 2.22MB]
- Issues Paper No. 4, "Criteria for Determining Industries" [PDF, 6.32MB]
- Issues Paper No. 5, "The Impact of Classification Revisions on Time Series" [PDF, 2.07MB]
- Issues Paper No. 6, "Services Classifications" [PDF, 1.34MB]
ECPC Concept Reports
- ECPC Report 1, "Economic Concepts in SIC Industries" [PDF, 47MB]
- ECPC Report 2, "The Heterogeneity Index: A Quantitative Tool to Support Industrial Classifications" [PDF, 15MB]
NAICS Clarification Memoranda, 1-3
NAICS Agreements
- Agreement 01 [PDF, 53KB] Petroleum and coal products manufacturing, chemicals manufacturing, and rubber and plastics products manufacturing
- Agreement 02 [PDF, 28KB] Broadcasting and telecommunications
- Agreement 03 [PDF, 32KB] Foodservices and drinking places and accommodations
- Agreement 04 [PDF, 46KB] Crop production, animal production, forestry and logging, fishing, hunting and trapping, and support activities for agriculture
- Agreement 05 [PDF, 65KB] Textile mills, textile product mills, apparel manufacturing, and leather and allied product manufacturing
- Agreement 06 [PDF, 45KB] Food and kindred product manufacturing and beverage and tobacco product manufacturing
- Agreement 07 [PDF, 54KB] Fabricated metal product manufacturing
- Agreement 08 [PDF, 52KB] Machinery manufacturing
- Agreement 09 [PDF, 34KB] Electrical equipment, appliance, and component manufacturing
- Agreement 10 [PDF, 42KB] Transportation equipment manufacturing
- Agreement 11 [PDF, 39KB] Health and social assistance
- Agreement 12 [PDF, 32KB] Educational services
- Agreement 13 [PDF, 45KB] Computer and electronic product manufacturing
- Agreement 14 [PDF, 36KB] Furniture manufacturing
- Agreement 15 [PDF, 28KB] Printing and related support activities
- Agreement 16 [PDF, 54KB] Professional, scientific, and technical services
- Agreement 17 [PDF, 40KB] Performing arts, spectator sports and related industries, museums, historical sites and similar institutions, and recreation, amusement, and gambling
- Agreement 18 [PDF, 55KB] Information
- Agreement 19 [PDF, 30KB] Wood product manufacturing, except furniture
- Agreement 20 [PDF, 32KB] Rental and leasing
- Agreement 21 [PDF, 33KB] Repair and maintenance
- Agreement 22 [PDF, 44KB] Management and support
- Agreement 23 [PDF, 66KB] Transportation
- Agreement 24 [PDF, 67KB] Finance and Insurance
- Agreement 25 [PDF, 21KB] Retail and wholesale trade
- Agreement 26 [PDF, 28KB] Mining
- Agreement 27 [PDF, 27KB] Paper manufacturing
- Agreement 28 [PDF, 26KB] Nonmetallic mineral manufacturing
- Agreement 29 [PDF, 32KB] Primary metal manufacturing
- Agreement 30 [PDF, 40KB] Miscellaneous manufacturing
- Agreement 31 [PDF, 18KB] Postal service and couriers
- Agreement 32 [PDF, 27KB] Construction
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