NAICS 3 Digit Subsector Code 221

Subsector 221

NAICS Subsector Code 221 – Utilities

Definition of NAICS 3 Digit Subsector Code 221: Industries in the Utilities subsector provide electric power, natural gas, steam supply, water supply, and sewage removal through a permanent infrastructure of lines, mains, and pipes. Establishments are grouped together based on the utility service provided and the particular system or facilities required to perform the service.

Three Digit Subsector Breakdown for the North American Industry Classification System

NAICS codes are broken down by digit. The broadest description starts with the 2 digit sector codes. The 3 digit subsector codes are more specific, then the 4 digit industry group, 5 digit industry, and the most specific is the 6 digit NAICS code. If NAICS Subsector 221 does not describe the industry of the business in question, then select the largest applicable code below. From there, follow the progression of smaller digits to the larger digits in order to obtain the most specific 6 digit classification.

  • Sector 22: Utilities
    • Subsector 221: Utilities
      • Industry Group 2211: Electric Power Generation, Transmission and Distribution
        • Industry 22111: Electric Power Generation
          • 6 Digit Code(s) NAICS 221111: Hydroelectric Power Generation
          • 6 Digit Code(s) NAICS 221112: Fossil Fuel Electric Power Generation
          • 6 Digit Code(s) NAICS 221113: Nuclear Electric Power Generation
          • 6 Digit Code(s) NAICS 221114: Solar Electric Power Generation
          • 6 Digit Code(s) NAICS 221115: Wind Electric Power Generation
          • 6 Digit Code(s) NAICS 221116: Geothermal Electric Power Generation
          • 6 Digit Code(s) NAICS 221117: Biomass Electric Power Generation
          • 6 Digit Code(s) NAICS 221118: Other Electric Power Generation
        • Industry 22112: Electric Power Transmission, Control, and Distribution
          • 6 Digit Code(s) NAICS 221121: Electric Bulk Power Transmission and Control
          • 6 Digit Code(s) NAICS 221122: Electric Power Distribution
      • Industry Group 2212: Natural Gas Distribution
        • Industry 22121: Natural Gas Distribution
          • 6 Digit Code(s) NAICS 221210: Natural Gas Distribution
      • Industry Group 2213: Water, Sewage and Other Systems
        • Industry 22131: Water Supply and Irrigation Systems
          • 6 Digit Code(s) NAICS 221310: Water Supply and Irrigation Systems
        • Industry 22132: Sewage Treatment Facilities
          • 6 Digit Code(s) NAICS 221320: Sewage Treatment Facilities
        • Industry 22133: Steam and Air-Conditioning Supply
          • 6 Digit Code(s) NAICS 221330: Steam and Air-Conditioning Supply

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NAICS 3 Digit Subsector Code 221