North American Industry Classification System (NAICS) code 31121 is used by federal buyers for market research, set-aside size standards, and reporting. Official titles come from the Census Bureau NAICS structure.
Official definition
This industry comprises establishments primarily engaged in one or more of the following: (1) milling flour or meal from grains or vegetables; (2) preparing flour mixes or doughs from flour milled in the same establishment; (3) milling, cleaning, and polishing rice; and (4) manufacturing malt from barley, rye, or other grains.
- Official title
- Flour Milling and Malt Manufacturing
- Code level
- 5
- Parent industry
- Grain and Oilseed Milling 3112
- Open opportunities
- 0 open · 0 active
Excluded or separately classified activities
Official Census cross-references identify activities that belong under another North American Industry Classification System (NAICS) code.
Brewing malt beverages--are classified in Industry 31212, Breweries;
Crushing soybeans or wet milling corn and vegetables--are classified in Industry 31122, Starch and Vegetable Fats and Oils Manufacturing;
Drying and/or dehydrating ingredients and packaging them with purchased rice--are classified in Industry 31142, Fruit and Vegetable Canning, Pickling, and Drying; and
Manufacturing malt extract and syrups--are classified in Industry 31194, Seasoning and Dressing Manufacturing.
Manufacturing prepared flour mixes or doughs from flour ground elsewhere--are classified in Industry 31182, Cookie, Cracker, and Pasta Manufacturing;
Mixing purchased dried and dehydrated ingredients with purchased rice--are classified in Industry 31199, All Other Food Manufacturing;
Preparing breakfast cereals from flour milled in the same establishment--are classified in Industry 31123, Breakfast Cereal Manufacturing;
Source and edition
2022 NAICS Manual definition and reference material from the U.S. Census Bureau.