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Economic Census


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NAICS Structure

NAICS uses a hierarchical structure. A "hierarchy" is the relationship of one item to a particular category.

The organization of NAICS is as follows:

  • Sector: 2-digit code
    • Subsector: 3-digit code
      • Industry Group: 4-digit code
        • NAICS Industry: 5-digit code
          • National Industry: 6-digit code

Note: Three sectors are represented by a range of 2-digit codes. These include Manufacturing (31-33), Retail Trade (44-45) and Transportation and Warehousing (48-49).

Example

Level NAICS Code Title
Sector 44-45 Retail Trade
Subsector 441 Motor Vehicle and Parts Dealer
Industry Group 4412 Other Motor Vehicle Dealers
NAICS Industry 44122 Motorcycle, Boat, and Other Motor Vehicle Dealers
National Industry 441221 Motorcycle, ATV, and Personal Watercraft Dealers

Note: Some tables in American FactFinder also display data at the 7- and 8-digit levels. Although these codes are NAICS-based codes, they are not included in the official classification system.

Source: U.S. Census Bureau | Economic Planning and Coordination Division | 1-877-790-1876 | Last Revised: August 15, 2014