NAICS 2022 industry USA Verified: Census NAICS 2022 · 2026-01-01
33131
NAICS 33131 — Alumina and Aluminum Production and Processing
Alumina and Aluminum Production and Processing
NAICS 33131 is the NAICS industry code for alumina and aluminum production and processing establishments in the United States. It forms part of the hierarchical North American Industry Classification System maintained by the Census Bureau.
Child industry codes in 33131 (4)
Exclusions & Cross-References
Activities classified under other official NAICS codes:
- pouring non-ferrous molten metal into moulds, or under pressure into dies, to form castings (See 33152 Non-ferrous metal foundries)
Official data
| Feature | Description |
|---|---|
| Official name | North American Industry Classification System (NAICS) 2022 |
| Issuing authority | U.S. Census Bureau with OMB, Statistics Canada, and INEGI |
| Tax authority | Internal Revenue Service (IRS) |
| Purpose | Statistical business classification and federal contracting (SAM.gov, SBA standards) |
| Used in | SAM.gov registration, SBA size determinations, IRS tax classification, SEC EDGAR (via SIC crosswalk) |
| Active since | 2022 (current edition) |
| Hierarchy level | Sector (2-digit) |
| Source | https://www.census.gov/naics/ |
NAICS hierarchy path
Trace the classification from the broadest sector down to this national industry code.