NAICS Code 327331 — Concrete Block and Brick Manufacturing

National Industry in the official 2022 North American Industry Classification System (U.S. Census Bureau). It is one of 2 national industries under 32733 (Concrete Pipe, Brick, and Block Manufacturing).

Code	327331
Title	Concrete Block and Brick Manufacturing
Level	National Industry (6-digit)
Edition	NAICS 2022 edition
SBA size standard	500 employees

Official definition (2022 NAICS)

This U.S. industry comprises establishments primarily engaged in manufacturing concrete block and brick.

Is a business under 327331 "small"?

Under the SBA size standards (13 CFR 121.201, effective March 17, 2023), a business classified in NAICS 327331 qualifies as a small business if it does not exceed 500 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 327331 sits in the hierarchy

Level	Code	Title
Sector	31-33	Manufacturing
Subsector	327	Nonmetallic Mineral Product Manufacturing
Industry Group	3273	Cement and Concrete Product Manufacturing
NAICS Industry	32733	Concrete Pipe, Brick, and Block Manufacturing
National Industry	327331	Concrete Block and Brick Manufacturing

Related SIC codes

Via the official U.S. Census concordance (1987 SIC ↔ NAICS), shown only where the industry definition is unchanged in NAICS 2022.

SIC code	Title
3251	Brick and Structural Clay Tile
3271	Concrete Block and Brick

Related National Industry codes

• 327332 — Concrete Pipe Manufacturing

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.