How to read a NAICS code
Understand what each code length means and how the parent chain works.
The shorter the code, the broader the economic activity. Two digits identify sectors; six digits identify Canadian industries.
Each row inherits from a parent, so the code tree is not flat. That makes filtering, hierarchy browsing, and crosswalks reliable.
A six-digit code page shows the official title, the parent path, and the exact source notes that belong to that code.