NAICS Definition
The North American Industry Classification System. A standardized six-digit numerical code system used by federal agencies to classify business establishments for statistical and regulatory analysis.
Related Guides & Tools
- NAICS Codes Explained: Structure, Hierarchy, and Purpose — A comprehensive foundational overview explaining what NAICS codes are, how their hierarchy works, and how federal agencies use them.
- How to Find and Verify Your Business NAICS Code — A step-by-step practical guide to looking up and selecting the correct NAICS code for an organization using self-classification rules.
- NAICS 2017 to 2022 Updates: Key Changes, Splits, and Mergers — An analytical breakdown of the major changes introduced in the 2022 NAICS revision, detailing merged codes and retired classifications.
- SIC ↔ NAICS Concordance Crosswalk — Search and map old SIC codes to modern formats.