NAICS 321113

Overview

The North American Industry Classification System is the common framework federal statistical agencies use to classify business establishments and publish economic statistics. Developed under the Office of Management and Budget and adopted in 1997, NAICS was created jointly with Statistics Canada and Mexico’s INEGI to ensure comparability across North America. ¹

NAICS 321113 defines establishments primarily engaged in sawing logs or bolts into dimension lumber, boards, beams, timbers, poles, ties, shingles, shakes, siding, and wood chips; rough lumber may be planed to achieve uniform size. Federal economic programs use this code to tabulate and disseminate industry data. ²

Census Bureau economic programs are implementing the 2022 NAICS vintage for published statistics according to an agency-wide timeline. ³

See also on G2X:

• G2X — NAICS 321113
• G2X — NAICS 321114
• G2X — NAICS 113310

What this NAICS covers

• Primary conversion of logs or bolts into dimension lumber and boards via sawing. ²
• Production of beams, timbers, poles, railway ties, shingles, shakes, and wood siding. ²
• Generation of wood chips from logs or bolts as a primary product or byproduct. ²
• Planing of rough lumber produced in-house to achieve smoothness and uniform dimensions. ²
• Sawmill operations producing poles, pilings, and posts when the activity is sawing (not treatment). ²
• Establishments whose core production process begins with logs/bolts to make solid wood members. ²

Related NAICS and PSC codes

Type	Code	Descriptor
NAICS	113310	Logging
NAICS	321114	Wood Preservation
PSC	5510	Lumber and Related Basic Wood Materials
PSC	5530	Plywood and Veneer

Scope notes and exclusions

• Planing purchased lumber or manufacturing cut stock/dimension stock from logs or bolts is classified in NAICS 32191 Millwork, not in 321113. ²
• Veneer production from logs/bolts and engineered wood members other than solid wood are classified under NAICS 32121, not 321113. ²
• Operating portable chipper mills in the field is classified in NAICS 113310 Logging, not 321113. ²
• Treating wood with preservatives (including poles, pilings, and posts) is classified in NAICS 321114. ²

Frequently asked questions

• What activities fall under NAICS 321113? Sawmills that saw logs or bolts into lumber, beams, timbers, ties, shingles/shakes, siding, and wood chips. They may also plane rough lumber they produce to achieve smooth, uniform sizes. See also on G2X: NAICS 321113. ²

• Are portable chipper mills included in NAICS 321113? No. Field operations running portable chipper mills are classified under NAICS 113310 Logging, not in 321113. ²

• Does NAICS 321113 include wood preservation or treating? No. Preservative treatment of wood—including treating round poles, pilings, and posts—is classified in NAICS 321114. ²

• Can sawmills under NAICS 321113 sell wood chips? Yes. Producing wood chips from logs or bolts is explicitly part of NAICS 321113, whether as a main product or as a byproduct of sawing. ²

• Is planing purchased lumber considered NAICS 321113? No. Planing purchased lumber or manufacturing cut/dimension stock is classified in NAICS 32191 Millwork, not in 321113. ²

Useful resources

• G2X — NAICS 321113
• U.S. Census: NAICS 321113 definition and cross-references (Sector 31–33, Manufacturing). ²
• U.S. Census: Implementation of the 2022 NAICS (timeline and program adoption). ³
• U.S. Census: 2022 Economic Census — Manufacturing (Sector 31–33) data tables. ⁴

References

1. U.S. Census Bureau — 2017 North American Industry Classification System (NAICS) Manual overview. https://www.census.gov/library/publications/2017/econ/2017-naics-manual.html
2. U.S. Census Bureau — NAICS Sector 31–33 (Manufacturing) definitions, including 321113 Sawmills. https://www.census.gov/naics/resources/archives/sect31-33.html
3. U.S. Census Bureau — The Census Bureau’s Implementation of the 2022 NAICS. https://www.census.gov/library/reference/code-lists/naics/2022/implementation-timeline.html
4. U.S. Census Bureau — 2022 NAICS Sector 31–33 Manufacturing data. https://www.census.gov/data/tables/2022/econ/economic-census/naics-sector-31-33.html