NAICS 2022 nationalIndustry * USA Verified: Census NAICS 2022 · 2026-01-01
311221
NAICS 311221 — Wet Corn Milling and Starch Manufacturing
Wet Corn Milling and Starch Manufacturing
NAICS 311221 is the national industry code for wet corn milling and starch manufacturing establishments in the United States. The Small Business Administration sets a size standard of 1,300 for this classification. It forms part of the hierarchical North American Industry Classification System maintained by the Census Bureau.
SBA: 1,300
View full SBA standard
Related industries in 31122 (Starch and Vegetable Fats and Oils Manufacturing)
View parent 31122Official Inclusions
- starch manufacturing
Exclusions & Cross-References
Activities classified under other official NAICS codes:
- grinding (dry-milling) corn (See 311211 Flour milling (US))
- manufacturing ethyl alcohol by the wet-mill process (See 325190 Other basic organic chemical manufacturing (MEX))
- manufacturing laundry starches (See 325610 Soap and cleaning compound manufacturing (MEX))
- manufacturing table syrups from corn syrup; and starch-based dessert powders (See 311990 All other food manufacturing (CAN))
- reducing maple sap to maple syrup (See 111994 Maple syrup and products production (CAN))
Official Illustrative Examples
Primary activities officially recognized by Census Bureau / Statistics Canada:
cooking oil, made by wet-milling corn corn gluten feed and meal, manufacturing corn sweeteners (e.g., dextrose, fructose, glucose), made by wet-milling corn corn syrup, made by wet-milling corn maltodextrins and gluten, manufacturing margarine and other corn oils, made by wet-milling corn starches (i.e., root, rice, potato, grain, corn or vegetable) (except laundry), manufacturing
Complete Index of Activities (20 recognized activities) ▼
cooking oil, made by wet-milling corn
corn gluten feed and meal, manufacturing
corn oil cake and meal, manufacturing
corn oil mills
corn oil, crude and refined, made by wet-milling corn
corn sweeteners (e.g., dextrose, fructose, glucose), made by wet-milling corn
corn syrup, made by wet-milling corn
crude and refined vegetable oils made by wet milling
crude corn oil, manufacturing
dextrin, made by wet-milling corn
gluten feed, flour and meal, made by wet-milling corn
high fructose corn syrup (HFCS), manufacturing
maltodextrins and gluten, manufacturing
margarine and other corn oils, made by wet-milling corn
starch manufacturing
starches (i.e., root, rice, potato, grain, corn or vegetable) (except laundry), manufacturing
steepwater concentrate, manufacturing
sugar, made by wet-milling corn
tapioca, manufacturing
wet corn milling
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.
Cross-references & crosswalks
SBA size standard description
Wet Corn Milling and Starch Manufacturing
Changes to receipts-based standard: [object Object]
Trade codes using this NAICS
These Schedule B export codes explicitly reference NAICS 311221 in the Census trade classification files.