NAICS Code 519210 — Libraries and Archives

National Industry in the official 2022 North American Industry Classification System (U.S. Census Bureau). It is the only national industry under 51921 (Libraries and Archives).

Code	519210
Title	Libraries and Archives
Level	National Industry (6-digit)
Edition	NAICS 2022 edition
SBA size standard	$21 million in average annual receipts

Official definition (2022 NAICS)

This industry comprises establishments primarily engaged in providing library or archive services. These establishments are engaged in maintaining collections of documents (e.g., books, journals, newspapers, and music) and facilitating the use of such documents (recorded information regardless of its physical form and characteristics) as required to meet the informational, research, educational, or recreational needs of their user. These establishments may also acquire, research, store, preserve, and generally make accessible to the public historical documents, photographs, maps, audio material, audiovisual material, and other archival material of historical interest. All or portions of these collections may be accessible electronically.

Is a business under 519210 "small"?

Under the SBA size standards (13 CFR 121.201, effective March 17, 2023), a business classified in NAICS 519210 qualifies as a small business if it does not exceed $21 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 519210 sits in the hierarchy

Level	Code	Title
Sector	51	Information
Subsector	519	Web Search Portals, Libraries, Archives, and Other Information Services
Industry Group	5192	Web Search Portals, Libraries, Archives, and Other Information Services
NAICS Industry	51921	Libraries and Archives
National Industry	519210	Libraries and Archives

No direct SIC mapping is shown for this code: it was introduced or redefined after the official 1987 SIC ↔ 2002 NAICS concordance. Use the crosswalk tool to explore related legacy codes.

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.