2022 NAICS national industry in sector 31-33 Manufacturing
327331 Concrete Block and Brick Manufacturing
NAICS 327331 is the US industry code for concrete block and brick manufacturing. This U.S.
- Code
- 327331 (2022 NAICS)
- Title
- Concrete Block and Brick Manufacturing
- Part of
- Concrete Pipe, Brick, and Block Manufacturing
- SBA small business limit
- Up to 500 employees
- Closest UK SIC
- 23910, 23990 (details)
Changes coming. The NAICS 2027 revision applies to data from 1 January 2027, and SBA proposed new size standards on 20 August 2026. The values on this page are the ones in force today; we update this page when the official files change.
Official definition
This U.S. industry comprises establishments primarily engaged in manufacturing concrete block and brick.
Activities listed under 327331
The Census index assigns these 10 activities to this code. If your business matches one, this is your code.
- Architectural block, concrete (e.g., fluted, ground face, screen, slump, split), manufacturing
- Blocks, concrete and cinder, manufacturing
- Bricks, concrete, manufacturing
- Cinder (clinker) block, concrete, manufacturing
- Patio block, concrete, manufacturing
- Paving blocks, concrete, manufacturing
- Plinth blocks, precast terrazzo, manufacturing
- Precast concrete block and brick manufacturing
- Prestressed concrete blocks or bricks manufacturing
- Slumped brick manufacturing
SBA size standard for 327331
To count as a small business for SBA loans and federal contracts under NAICS 327331, your business (including affiliates) must not exceed 500 employees. Check your business.
Source: SBA table of size standards, effective March 17, 2023.
Closest UK SIC 2007 codes
There is no official one-to-one link between NAICS and UK SIC. These codes share the same international class (ISIC Rev. 4: 2395), so treat them as a starting point and check the definition.
- 23910Production of abrasive productsUK SIC
- 23990Manufacture of other non-metallic mineral products n.e.c.UK SIC
Built from Census concordances 2022→2017 NAICS and 2017 NAICS→ISIC Rev. 4.
Similar codes to compare
Data last changed November 14, 2026. How this page is built.