NAICS Code 311221 — Wet Corn Milling and Starch Manufacturing

National Industry in the official 2022 North American Industry Classification System (U.S. Census Bureau). It is one of 3 national industries under 31122 (Starch and Vegetable Fats and Oils Manufacturing).

Code	311221
Title	Wet Corn Milling and Starch Manufacturing
Level	National Industry (6-digit)
Edition	NAICS 2022 edition
SBA size standard	1,300 employees

Official definition (2022 NAICS)

This U.S. industry comprises establishments primarily engaged in wet milling corn and other vegetables (except to make ethyl alcohol). Examples of products made in these establishments are corn sweeteners, such as glucose, dextrose, and fructose; corn oil; and starches (except laundry).

Is a business under 311221 "small"?

Under the SBA size standards (13 CFR 121.201, effective March 17, 2023), a business classified in NAICS 311221 qualifies as a small business if it does not exceed 1,300 employees. Small-business status determines eligibility for federal set-aside contracts, SAM.gov certifications and SBA loan programs — employee count is averaged over the latest 24 months.

Where 311221 sits in the hierarchy

Level	Code	Title
Sector	31-33	Manufacturing
Subsector	311	Food Manufacturing
Industry Group	3112	Grain and Oilseed Milling
NAICS Industry	31122	Starch and Vegetable Fats and Oils Manufacturing
National Industry	311221	Wet Corn Milling and Starch Manufacturing

No direct SIC mapping is shown for this code: it was introduced or redefined after the official 1987 SIC ↔ 2002 NAICS concordance. Use the crosswalk tool to explore related legacy codes.

Related National Industry codes

• 311224 — Soybean and Other Oilseed Processing
• 311225 — Fats and Oils Refining and Blending

Data: official 2022 NAICS structure, descriptions and Census concordances, U.S. Census Bureau — U.S. government works in the public domain (17 U.S.C. §105). Suggested reference, not an official determination.