North American Industry Classification System - NAICS

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Introduction to NAICS

The North American Industry Classification System (NAICS) is the standard used by Federal statistical agencies in classifying business establishments for the purpose of collecting, analyzing, and publishing statistical data related to the U.S. business economy.

NAICS was developed under the auspices of the Office of Management and Budget (OMB), and adopted in 1997 to replace the Standard Industrial Classification (SIC) system. It was developed jointly by the U.S. Economic Classification Policy Committee (ECPC), Statistics Canada, and Mexico's Instituto Nacional de Estadistica y Geografia, to allow for a high level of comparability in business statistics among the North American countries.

This official U.S. Government Web site provides the latest information on plans for NAICS revisions, as well as access to various NAICS reference files and tools. Additional information on the background and development of NAICS is available in the section of this Web site.

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2017 NAICS Definition

T = Canadian, Mexican, and United States industries are comparable.

611110 Elementary and Secondary Schools

This industry comprises establishments primarily engaged in furnishing academic courses and associated course work that comprise a basic preparatory education. A basic preparatory education ordinarily constitutes kindergarten through 12th grade. This industry includes school boards and school districts.

Illustrative Examples:

Elementary schools
Parochial schools, elementary or secondary
High schools
Primary schools
Kindergartens
Schools for the physically disabled, elementary or secondary
Military academies, elementary or secondary

Cross-References.

Establishments primarily engaged in providing preschool or pre-kindergarten education are classified in Industry , Child Day Care Services; and
College level military academies are classified in Industry , Colleges, Universities, and Professional Schools.

Table displays the corresponding index entries of the databases by year
2007 NAICS	2012 NAICS	2017 NAICS	Corresponding Index Entries
611110	611110	611110	Academies, elementary or secondary
611110	611110	611110	Boarding schools, elementary or secondary
611110	611110	611110	Charter schools
611110	611110	611110	Elementary and secondary schools
611110	611110	611110	Elementary schools
611110	611110	611110	Finishing schools, secondary
611110	611110	611110	High schools
611110	611110	611110	High schools offering both academic and technical courses
611110	611110	611110	High schools offering both academic and vocational courses
611110	611110	611110	Junior high schools
611110	611110	611110	Kindergartens
611110	611110	611110	Kindergartens, combined with preschools
611110	611110	611110	Middle schools
611110	611110	611110	Military academies, elementary or secondary
611110	611110	611110	Montessori schools, elementary or secondary
611110	611110	611110	Parochial schools, elementary or secondary
611110	611110	611110	Preparatory schools, elementary or secondary
611110	611110	611110	Primary schools
611110	611110	611110	Private schools, elementary or secondary
611110	611110	611110	Public schools, elementary or secondary
611110	611110	611110	School boards, elementary and secondary
611110	611110	611110	School districts, elementary or secondary
611110	611110	611110	Schools for the intellectually and developmentally disabled (except preschool, job training, vocational rehabilitation)
611110	611110	611110	Schools for the physically disabled, elementary or secondary
611110	611110	611110	Schools, elementary
611110	611110	611110	Schools, secondary
611110	611110	611110	Secondary schools offering both academic and technical courses
611110	611110	611110	Seminaries, below university grade

2022 NAICS Manual

View or download this publication
[PDF, 7MB]
Reference Files
- NAICS Update Process Fact Sheet
  [PDF, 91.0KB]
Announcements

April 25, 2025
Due to a reduction in government resources, the Dr. NAICS telephone line will be discontinued effective April 30th. For all NAICS-related inquiries, please contact us by email at naics@census.gov. We appreciate your understanding and thank you for your continued interest in the North American Industry Classification System.

December 20, 2024 [PDF, 224KB] Statistical Policy Directive No. 8 North American Industry Classification System (NAICS) - Request for Comments on Possible Revision Updates for 2027; Notice. Vol. 89, No. 245

September 14, 2023
NAICS Update Process Fact Sheet is now available.

2022 NAICS Structure with Change Indicator [XLSX, 86KB]

Contact Us

Source: U.S. Census Bureau
North American Industry Classification System (NAICS)
(888) 756-2427
naics@census.gov
Last Revised: 04/29/2025

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