SIC Code 2421 — Sawmills and Planing Mills, General

4-digit industry in the 1987 Standard Industrial Classification — still requested by banks, insurers, SEC filings and legacy systems.

Code	2421
Title	Sawmills and Planing Mills, General
System	SIC 1987 (final edition — replaced by NAICS in 1997)

The SIC was last revised in 1987 and officially superseded by NAICS in 1997, but it never fully disappeared: the SEC still tags EDGAR filings with SIC codes, and many banks, insurers and legacy databases keep requesting it. That is why converting between the two systems is still routine work.

NAICS equivalents of SIC 2421

From the official U.S. Census concordance (1987 SIC → 2002 NAICS). Where the 2002 code no longer exists in NAICS 2022, the closest current code is shown.

NAICS 2002	Title (2002)	Current 2022 code
321113	Sawmills	321113 (same code)
321912	Cut Stock, Resawing Lumber, and Planing	321912 (same code)
321918	Other Millwork (including Flooring )	321918 (same code)
321920	Wood Container and Pallet Manufacturing	321920 (same code)
321999	All Other Miscellaneous Wood Product Manufacturing	321999 (same code)

Other SIC codes in 24xx

• 2411 — Logging
• 2426 — Hardwood Dimension and Flooring Mills
• 2429 — Special Product Sawmills, Not Elsewhere Classified
• 2431 — Millwork
• 2434 — Wood Kitchen Cabinets
• 2435 — Hardwood Veneer and Plywood
• 2436 — Softwood Veneer and Plywood
• 2439 — Structural Wood Members, Not Elsewhere Classified
• 2441 — Nailed and Lock Corner Wood Boxes and Shook
• 2448 — Wood Pallets and Skids
• 2449 — Wood Containers, Not Elsewhere Classified
• 2451 — Mobile Homes

Data: 1987 SIC titles (OSHA/Census) and official Census concordance — U.S. government works in the public domain (17 U.S.C. §105). Suggested reference, not an official determination.