NAICS Code For Manufacturing
The NAICS codes for manufacturing are NAICS Sectors 31–33. Manufacturing includes establishments engaged in the mechanical, physical, or chemical transformation of materials, substances, or components into new products. Assembly is generally considered manufacturing unless the activity is more appropriately classified as Sector 23 (Construction).
If you’re looking for a specific manufacturing type (food, chemicals, plastics, machinery, furniture, medical devices, etc.), use the sector link below and then drill down to the most specific 5–6 digit code that matches the product being made.
How to choose the correct NAICS code for manufacturing
Decision rule (fast): classify the establishment by the primary product it manufactures and the main production process.
- Step 1: Identify the main product category produced at the location (what is being made).
- Step 2: Match that product to the most specific code in NAICS 31–33 (Manufacturing).
- Step 3: If multiple products are made, choose the code tied to the dominant product line (largest share of revenue/output).
- Step 4: If you assemble components into a new product, that is typically manufacturing (unless the activity fits Construction or another sector better).
NAICS codes for manufacturing companies (common starting points)
Start with NAICS 31–33 – Manufacturing, then drill down by product family. Below are common manufacturing categories people often search for:
| Manufacturing category | Common NAICS code(s) | Use when the primary output is… |
|---|---|---|
| Food manufacturing | 311, 3119 | Packaged foods and ingredients (varies by product type) |
| Beverage manufacturing | 3121 | Soft drinks, bottled water, and other beverages |
| Chemical manufacturing | 325 | Industrial chemicals, soaps/cleaners, fertilizers, etc. |
| Pharmaceutical & medicine | 3254 | Pharmaceutical preparations, medicinal/botanical chemicals |
| Plastics products | 3261 | Plastic containers, films, pipes, molded plastic products |
| Cement & concrete products | 3273 | Cement, ready-mix concrete, concrete products |
| Fabricated metals | 3323 | Structural metals, metal components, sheet metal, windows/doors |
| Industrial machinery | 3332 | Industrial machinery and equipment (varies by machine type) |
| Packaging machinery | 333993 | Wrapping, bottling, canning, labeling machinery |
| Furniture & related products | 337 | Household, office, and institutional furniture |
| Medical devices & supplies | 3391 | Medical instruments, appliances, and supplies |
View more examples (popular “what code is this?” searches)
Pharmaceutical / supplements
- 3254 – Pharmaceutical and Medicine Manufacturing
- 325411 – Medicinal and Botanical Manufacturing
- 325412 – Pharmaceutical Preparation Manufacturing
Dietary supplements often map to medicinal/botanical chemicals depending on what is produced.
Plastics products
Concrete & cement products
Manufacturing company types
Many searches for “manufacturing NAICS code” are really searches for a specific product type. Use the sections below as quick shortcuts, then confirm the detailed definition on the linked code page.
Manufacturing equipment
There is no single “manufacturing equipment” code. Classify by the type of machinery produced.
Beverage manufacturing
Furniture manufacturing
Start with the parent sector, then select the specific furniture type.
- 337 – Furniture and Related Product Manufacturing
- 337214 – Office Furniture (except Wood) Manufacturing
- 337125 – Household Furniture (except Wood and Metal) Manufacturing
- 337124 – Metal Household Furniture Manufacturing
- 337122 – Nonupholstered Wood Household Furniture Manufacturing
- 337127 – Institutional Furniture Manufacturing
Tip: If the business is primarily installing/assembling as part of on-site building work, compare against NAICS Sector 23 – Construction.
Targeted NAICS manufacturing business lists
SICCODE.com compiles comprehensive business data and executive contact leads for businesses within NAICS 31–33 – Manufacturing. To order a list of companies within manufacturing NAICS codes, fill out the Request Form on the right of this page or see our Buy Business List page for purchasing information.
If you know the product type (food, plastics, chemicals, machinery, furniture, etc.), mention it in your request so the list can be aligned to the correct sub-industry.
FAQ
- What is the NAICS code for manufacturing?
Manufacturing is classified under NAICS Sectors 31–33. - Is assembly considered manufacturing?
Often yes—assembly of components into a new product is generally manufacturing, unless the activity fits Construction (Sector 23) or another sector better. - How do I pick the correct manufacturing NAICS code?
Choose the code that matches the establishment’s primary product line and production process, then use the most specific 5–6 digit code available. - What if the business makes multiple products?
Use the code tied to the dominant product line (largest share of revenue/output) and document the basis for your selection.
Next steps
Start with NAICS 31–33 – Manufacturing, then drill down by product category to find the best-fitting sub-industry.
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