The International Standard Industrial Classification system of All Economic Activities (ISIC) is maintained by the United Nations (UN).

The structure of the ISIC is:

  • 1. Agriculture, forestry and fishing
  • 2. Mining and quarrying
  • 3. Manufacturing
  • 4. Electricity, gas, steam and air conditioning supply
  • 5. Water supply; sewerage, waste management and remediation activities
  • 6. Construction
  • 7. Wholesale and retail trade; repair of motor vehicles and motorcycles
  • 8. Transportation and storage
  • 9. Accommodation and food service activities
  • 10. Information and communication
  • 11. Financial and insurance activities
  • 12. Real estate activities
  • 13. Professional, scientific and technical activities
  • 14. Administrative and support service activities
  • 15. Public administration and defence; compulsory social security
  • 16. Education
  • 17. Human health and social work activities
  • 18. Arts, entertainment and recreation
  • 19. Other service activities
  • 20. Activities of households as employers; undifferentiated goods- and services-producing activities of households for own use
  • 21. Activities of extraterritorial organizations and bodies

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