NAICS 339950

Overview

The North American Industry Classification System (NAICS) is the framework U.S. Federal statistical agencies use to classify business establishments for collecting, analyzing, and publishing economic data. Developed with Canada and Mexico under the Office of Management and Budget, NAICS replaced the SIC system in 1997 to improve comparability of business statistics across North America. ¹

Census programs are transitioning publications to the NAICS 2022 vintage, beginning with the 2022 Economic Census and continuing through 2027 per program-specific timelines. ³

NAICS 339950 — Sign Manufacturing — covers establishments primarily engaged in manufacturing signs and related displays made from all materials. It excludes printing of paper and paperboard signs and displays (classified in Printing) and certain paperboard displays and advertising services noted in cross‑references. ²

What this NAICS covers

• Manufacturing of signs and related displays as finished products. ²
• Fabrication of signage using any material type (e.g., metal, plastic, wood, composites). ²
• Production of non‑paper, non‑paperboard signs, notices, and displays. ²
• Assembly and finishing of sign units and display structures. ²
• Custom sign manufacturing performed in a manufacturing setting. ²
• Manufacturing of display items associated with signs (where not otherwise excluded by printing or paperboard conversion rules). ²

Related NAICS and PSC codes

Type	Code	Descriptor
NAICS	32311	Printing (paper/paperboard signs, notices, displays)
NAICS	322299	All Other Converted Paper Product Manufacturing (die‑cut paperboard displays)
NAICS	541890	Other Services Related to Advertising (sign lettering and painting)
PSC	9905	Signs, Advertising Displays, and Identification Plates

Common exclusions and boundaries

• Printing of advertising specialties and printing of paper or paperboard signs, notices, and displays is classified in NAICS 32311. ²
• Manufacture of die‑cut paperboard displays is classified in NAICS 322299. ²
• Sign lettering and painting services are classified in NAICS 541890. ²

Frequently asked questions

• What does NAICS 339950 include?

  • It includes establishments primarily engaged in manufacturing signs and related displays of all materials, such as metal, plastic, and wood. It excludes printed paper or paperboard signs and certain paperboard displays and advertising services, which are covered under other industries in the cross‑references. ²

• Are printed paper signs part of NAICS 339950?

  • No. Printing of paper and paperboard signs, notices, and displays is classified in NAICS 32311. Die‑cut paperboard displays are in NAICS 322299, and sign lettering/painting services are in NAICS 541890. ²

• Which PSC codes commonly align with manufactured signs?

  • Product procurements for signs often use PSC 9905 (“Signs, Advertising Displays, and Identification Plates”), per the official Product and Service Code Manual. ⁴

• What NAICS vintage is current for Federal statistical data releases?

  • Agencies are implementing NAICS 2022 across programs. The transition began with the 2022 Economic Census and will phase in through 2027, depending on each program’s schedule. Users should verify the vintage used in specific data series during the transition period. ³

Useful resources

• U.S. Census Bureau — NAICS 339950 industry description (definition and cross‑references). ²
• U.S. Census Bureau — Implementation of the 2022 NAICS (scope and timeline). ³
• Acquisition.gov — Product and Service Code (PSC) Manual (official PSC definitions, including PSC 9905). ⁴

References

1. U.S. Census Bureau — 2017 NAICS Manual (background on NAICS and SIC replacement). https://www.census.gov/library/publications/2017/econ/2017-naics-manual.html
2. U.S. Census Bureau — NAICS 2022 Code 339950: Sign Manufacturing (definition and cross‑references). https://www.census.gov/naics/?input=339950&year=2022&details=339950
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. Acquisition.gov — Product and Service Code Manual (April 2025). https://www.acquisition.gov/psc-manual/all