NAICS 813910:
Business Associations
This industry comprises establishments primarily engaged in promoting the business interests of their members. These establishments may conduct research on new products and services; develop market statistics; sponsor quality and certification standards; lobby public officials; or publish newsletters, books, or periodicals for distribution to their members.
Agricultural organizations (except youth farming organizations, farm granges)Real estate boardsChambers of commerce+2 examples
Matching SIC code: 8611 Business Associations (also 8699 Membership Organizations, Not Elsewhere Classified)
Where it sits
- 81Other Services (except Public Administration)Sector
- 813Religious, Grantmaking, Civic, Professional, and Similar OrganizationsSubsector
- 8139Business, Professional, Labor, Political, and Similar OrganizationsIndustry group
- 81391Business AssociationsNAICS industry
- 813910Business AssociationsNational industry
Largest companies with NAICS 813910
Updated Nov 9, 2026| Rank | Company | Headquarters | Employees |
|---|---|---|---|
| 1 |  NCAAncaa.org | Indianapolis, US | 14K |
| 2 |  IGA, INC.iga.com | Chicago, US | 7.1K |
| 3 |  Blue Cross Blue Shield Associationbcbs.com | Chicago, US | 5.7K |
| 4 |  National Association of REALTORS®nar.realtor | Chicago, US | 4.7K |
| 5 |  BNI Globalbni.com | Charlotte, US | 4.4K |
| 6 |  National Automobile Dealers Association (NADA)nada.org | Mc Lean, US | 4.2K |
| 7 |  Better Business Bureaubbb.org | New York, US | 3.4K |
| 8 |  National Restaurant Associationrestaurant.org | Washington, US | 1.9K |
| 9 |  Endeavorendeavor.org | New York, US | 1.9K |
| 10 |  National Association of Home Buildersnahb.org | Washington, US | 1.7K |
Not this code?
Similar activities the Census classifies elsewhere.
- Establishments owned by their members but organized to perform a specific business function, such as common marketing of crops, joint advertising, or buying cooperatives, are classified according to their primary activity.
- 541820Public Relations AgenciesEstablishments primarily engaged in lobbying public officials (i.e., lobbyists)
Questions about NAICS 813910
Which businesses use NAICS 813910?
What SIC code matches NAICS 813910?
How many companies have NAICS 813910?
Code titles, definitions, examples and SIC matches: NAICS 2022 and the Census concordances, US Census Bureau. Company counts and lists: Crustdata, companies with a website, each by its primary code, updated weekly. Employee counts are estimates.