2022 NAICS national industry in sector 31-33 Manufacturing
325315 Compost Manufacturing
NAICS 325315 is the US industry code for compost manufacturing. This U.S.
- Code
- 325315 (2022 NAICS)
- Title
- Compost Manufacturing
- Part of
- Fertilizer and Compost Manufacturing
- SBA small business limit
- Up to 550 employees
- Closest UK SIC
- 20120 (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 compost through the controlled aerobic, biological decomposition and curing of biodegradable materials.
When to use a different code
Census classifies these close-sounding activities somewhere else. Businesses mainly engaged in:
- Manufacturing nitrogenous fertilizer materials or fertilizer materials from sewage or animal waste and mixing these ingredients into nitrogenous fertilizers are classified in U.S. Industry 325311, Nitrogenous Fertilizer Manufacturing.
- Manufacturing phosphatic fertilizer materials and mixing these ingredients into phosphatic fertilizers are classified in U.S. Industry 325312, Phosphatic Fertilizer Manufacturing.
- Mixing ingredients made elsewhere into fertilizers are classified in U.S. Industry 325314, Fertilizer (Mixing Only) Manufacturing.
Activities listed under 325315
The Census index assigns these 2 activities to this code. If your business matches one, this is your code.
- Compost manufacturing
- Sewage and animal waste compost manufacturing
SBA size standard for 325315
To count as a small business for SBA loans and federal contracts under NAICS 325315, your business (including affiliates) must not exceed 550 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: 2012), so treat them as a starting point and check the definition.
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.