NAICS Code 813920 — Professional Organizations

National Industry in the official 2022 North American Industry Classification System (U.S. Census Bureau). It is the only national industry under 81392 (Professional Organizations).

Code	813920
Title	Professional Organizations
Level	National Industry (6-digit)
Edition	NAICS 2022 edition
SBA size standard	$23.5 million in average annual receipts

Official definition (2022 NAICS)

This industry comprises establishments primarily engaged in promoting the professional interests of their members and the profession as a whole. These establishments may conduct research; develop statistics; sponsor quality and certification standards; lobby public officials; or publish newsletters, books, or periodicals for distribution to their members.

Illustrative Examples:

Bar associations

Learned societies

Dentists' associations

Peer review boards

Engineers' associations

Professional standards review boards

Health professionals' associations

Scientists' associations

Is a business under 813920 "small"?

Under the SBA size standards (13 CFR 121.201, effective March 17, 2023), a business classified in NAICS 813920 qualifies as a small business if it does not exceed $23.5 million in average annual receipts. Small-business status determines eligibility for federal set-aside contracts, SAM.gov certifications and SBA loan programs — receipts are averaged over the latest 5 fiscal years.

Where 813920 sits in the hierarchy

Level	Code	Title
Sector	81	Other Services (except Public Administration)
Subsector	813	Religious, Grantmaking, Civic, Professional, and Similar Organizations
Industry Group	8139	Business, Professional, Labor, Political, and Similar Organizations
NAICS Industry	81392	Professional Organizations
National Industry	813920	Professional Organizations

Related SIC codes

Via the official U.S. Census concordance (1987 SIC ↔ NAICS), shown only where the industry definition is unchanged in NAICS 2022.

SIC code	Title
8621	Professional Membership Organizations

Data: official 2022 NAICS structure, descriptions and Census concordances, U.S. Census Bureau — U.S. government works in the public domain (17 U.S.C. §105). Suggested reference, not an official determination.