NAICS 325315

Overview

The North American Industry Classification System (NAICS) is the federal statistical standard used to classify business establishments so agencies can collect, analyze, and publish data on the U.S. economy. Developed under the Office of Management and Budget with Canada and Mexico, NAICS was adopted in 1997 and is updated on a five‑year cycle; the current structure includes a 2022 vintage. ¹

NAICS 325315 — Compost Manufacturing — is not a defined U.S. national industry in the 2022 NAICS. Official cross‑references place “manufacturing compost” in NAICS 325314 (Fertilizer (Mixing Only) Manufacturing) within industry group NAICS 32531 (Fertilizer Manufacturing). Operating compost dumps is classified under NAICS 562219 (Other Nonhazardous Waste Treatment and Disposal), not manufacturing. ²

What this NAICS covers

• Manufacturing compost as a fertilizer product (classified to NAICS 32531, particularly NAICS 325314). ²
• Manufacturing fertilizers from sewage or animal waste (part of NAICS 32531). ³
• Mixing fertilizer ingredients made elsewhere into finished fertilizer blends (NAICS 325314). ³
• Producing nitrogenous or phosphatic fertilizer materials and incorporating them into fertilizers (NAICS 32531). ³
• Excludes operating compost dumps or waste‑handling sites (classified to NAICS 562219). ²

Related NAICS and PSC codes

Type	Code	Descriptor
NAICS	32531	Fertilizer Manufacturing
NAICS	325314	Fertilizer (Mixing Only) Manufacturing
NAICS	562219	Other Nonhazardous Waste Treatment and Disposal
PSC	8720	Fertilizers

Notes on 2022 NAICS alignment

The Census Bureau is implementing 2022 NAICS across programs through 2027. No separate U.S. six‑digit industry for “Compost Manufacturing” is identified in 2022 NAICS; compost manufacturing activity continues to be captured within fertilizer manufacturing classifications. ⁴

Frequently asked questions

• Does NAICS 325315 exist in 2022 NAICS?
  Not specified by official sources. “Manufacturing compost” is classified under NAICS 325314 within NAICS 32531, while compost dumps fall under NAICS 562219. ²

• Which NAICS should a compost producer use for federal statistical reporting?
  Compost produced and sold as a fertilizer is classified within NAICS 32531; blending of purchased materials into fertilizers is specifically NAICS 325314. Review detailed activity descriptions to ensure the best fit. ³

• What PSC applies when procuring compost products?
  For supply buys, PSC 8720 (Fertilizers) covers fertilizer products; agencies select PSCs based on the predominant item purchased. Service contracts for waste handling are not covered by this supply PSC. ⁵

• Did the 2022 NAICS update create a distinct code for compost manufacturing?
  Not specified by official sources. Implementation materials and the 2022 structure do not list a separate six‑digit U.S. industry for compost manufacturing; relevant activities remain within fertilizer manufacturing. ⁴

• Are municipal composting operations part of manufacturing under NAICS?
  No. Facilities operating compost dumps or other nonhazardous waste treatment and disposal sites are classified under NAICS 562219, not under the Manufacturing sector. ²

Useful resources

• G2X — NAICS 325315 overview
• Census NAICS home and 2022 structure/search. ¹
• Census NAICS cross‑reference noting compost manufacturing classification to NAICS 325314 and compost dumps to NAICS 562219. ²
• Census NAICS 32531 industry description (fertilizer manufacturing scope). ³
• Acquisition.gov listing of PSC categories including PSC 8720 Fertilizers. ⁵

References

1. U.S. Census Bureau — NAICS: Introduction and 2022 search structure. https://www.census.gov/naics/?chart=2022&input=52
2. U.S. Census Bureau — NAICS Sector 56 cross‑references noting “manufacturing compost” is in NAICS 325314 and compost dumps in NAICS 562219. https://www.census.gov/naics/resources/archives/sect56.html
3. U.S. Census Bureau — NAICS Sector 31–33; industry group 32531 Fertilizer Manufacturing descriptions. https://www.census.gov/naics/resources/archives/sect31-33.html
4. U.S. Census Bureau — Implementation of the 2022 NAICS (timeline and overview). https://www.census.gov/library/reference/code-lists/naics/2022/implementation-timeline.html
5. Acquisition.gov — PGI Part 208 listing PSC groupings including PSC 8720 Fertilizers. https://www.acquisition.gov/node/55759/printable/print