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NAICS Code Lookup
NAICS code lookup for 17.7 million US business entities — search by industry name or sector
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Overview
What is a NAICS code?
The North American Industry Classification System (NAICS) is the standard used by US federal statistical agencies — including the Census Bureau, Bureau of Labor Statistics, and IRS — to classify business establishments by their primary economic activity. It was jointly developed by the statistical agencies of the United States, Canada, and Mexico, and first published in 1997 to replace the older Standard Industrial Classification — see the SIC code equivalent for the legacy system, the difference between NAICS and SIC for the side-by-side, or use our converter to convert NAICS to SIC. New to the system? What is a NAICS code? covers the full structure.
NAICS 2022 is the current revision, effective from January 1, 2022. It covers 20 broad economic sectors and uses a 2-to-6-digit hierarchical code structure: the more digits in a code, the more specific the classification. A company selling cloud software sits under a different 5-digit NAICS code than a company installing on-premise enterprise systems — even though both fall within the same 2-digit sector.
This NAICS code directory covers all 20 NAICS 2022 sectors down to the 5-digit industry level, with US business entity counts sourced from InfobelPRO's registry of 17.7 million classified US establishments. Use the search bar above to find a code by keyword, or browse the full hierarchy through the sector links above.
Hierarchy
How NAICS Codes Are Structured
Each additional digit narrows the classification from a broad economic sector down to a specific industry. The first five digits are identical across the US, Canada, and Mexico; the sixth digit is country-specific.
| Digits | Level | Description |
|---|---|---|
| 2 | Sector | Broadest grouping. 20 sectors cover the entire North American economy — from Agriculture (11) to Public Administration (92). |
| 3 | Subsector | Narrows a sector into major activity groups. Sector 54 (Professional Services) splits into subsectors like 541 (Professional & Technical Services). |
| 4 | Industry Group | Groups related industries under a 4-digit code. Subsector 541 includes group 5415 (Computer Systems Design and Related Services). |
| 5 | NAICS Industry | The primary comparison level shared identically across the US, Canada, and Mexico. Identifies a specific type of establishment by activity. |
| 6 | National Industry | Country-specific subdivisions. The US, Canada, and Mexico each define their own 6-digit codes for national statistical purposes. |
Guide
How to find your NAICS code
- 1
Describe your primary business activity
Think about what your establishment does to generate the most revenue. Ignore secondary activities — NAICS codes reflect the primary activity only. A trucking company that also stores goods should focus on transportation, not warehousing.
- 2
Search by keyword or partial code
Use the search bar at the top of this page. Type a keyword like "freight trucking", "software development", or "restaurant" — or enter a partial code like "5415" to see matching industries. Results are ranked by level: sectors appear first, then subsectors, then industry groups.
- 3
Browse the hierarchy
Click a sector to see its subsectors, then drill into industry groups and individual 5-digit industries. Each level page shows entity counts and a description so you can confirm you're in the right classification branch.
- 4
Match to the 5-digit industry
The 5-digit NAICS industry is the level most commonly required — for SAM.gov registration, B2B databases, and federal statistical reporting. Choose the code whose description most closely matches your primary activity.
- 5
Verify with the official NAICS manual
For formal registrations, cross-reference your selection with the US Census Bureau's official NAICS 2022 manual to confirm the definition and any includes/excludes notes for that code.
Reference
All 20 NAICS Sectors at a Glance
| Code | Sector & Description | US Entities |
|---|---|---|
| 11 | NAICS 11 — Agriculture, Forestry, Fishing and Hunting The Agriculture, Forestry, Fishing and Hunting sector comprises establishments primarily engaged in growing crops, raising animals, harvesting timber, and harvesting fish. | 367,959 |
| 21 | NAICS 21 — Mining, Quarrying, and Oil and Gas Extraction The Mining, Quarrying, and Oil and Gas Extraction sector includes establishments that extract naturally occurring mineral solids, liquid minerals, and gases. | 33,339 |
| 22 | NAICS 22 — Utilities The Utilities sector comprises establishments engaged in the provision of electric power, natural gas, steam, water supply, and sewage treatment. | 52,270 |
| 23 | NAICS 23 — Construction The Construction sector includes establishments primarily responsible for constructing buildings and infrastructure, including new work, additions, alterations, and repair. | 1,512,763 |
| 31-33 | NAICS 31-33 — Manufacturing The Manufacturing sector encompasses establishments engaged in the mechanical, physical, or chemical transformation of materials, substances, or components into new products. | 660,640 |
| 42 | NAICS 42 — Wholesale Trade The Wholesale Trade sector comprises establishments that sell merchandise to retailers, industrial, commercial, institutional, farm, or professional buyers, or to other wholesalers. | 698,477 |
| 44-45 | NAICS 44-45 — Retail Trade The Retail Trade sector includes establishments that sell merchandise in small quantities to the general public for personal or household consumption. | 1,870,617 |
| 48-49 | NAICS 48-49 — Transportation and Warehousing The Transportation and Warehousing sector includes establishments providing transportation of passengers and cargo, warehousing and storage, scenic and sightseeing transportation, and support activities for transportation. | 711,582 |
| 51 | NAICS 51 — Information The Information sector comprises establishments that produce and distribute information and cultural products, provide the means to transmit or distribute these products, or process data. | 370,463 |
| 52 | NAICS 52 — Finance and Insurance The Finance and Insurance sector encompasses establishments engaged in financial transactions and those facilitating such transactions. | 771,419 |
| 53 | NAICS 53 — Real Estate and Rental and Leasing The Real Estate and Rental and Leasing sector includes establishments that rent, lease, or otherwise allow the use of tangible or intangible assets, as well as those that provide related services such as property management and appraisal. | 926,476 |
| 54 | NAICS 54 — Professional, Scientific, and Technical Services The Professional, Scientific, and Technical Services sector includes establishments where human capital is the major input. | 2,489,746 |
| 55 | NAICS 55 — Management of Companies and Enterprises The Management of Companies and Enterprises sector comprises establishments that hold the securities of other companies for the purpose of owning a controlling interest, or that administer and oversee multiple business operations. | 93,116 |
| 56 | NAICS 56 — Administrative and Support and Waste Management and Remediation Services The Administrative and Support and Waste Management and Remediation Services sector groups establishments providing a wide variety of support services to businesses including office administration, facilities support, employment placement, document preparation, janitorial, and waste collection and disposal.. | 1,553,879 |
| 61 | NAICS 61 — Educational Services The Educational Services sector includes establishments providing instruction and training across a wide variety of subjects. | 430,343 |
| 62 | NAICS 62 — Health Care and Social Assistance The Health Care and Social Assistance sector includes establishments providing health care and social assistance to individuals. | 1,695,931 |
| 71 | NAICS 71 — Arts, Entertainment, and Recreation The Arts, Entertainment, and Recreation sector includes a wide range of establishments that operate facilities or provide services to meet varied cultural, entertainment, and recreational interests. | 385,880 |
| 72 | NAICS 72 — Accommodation and Food Services The Accommodation and Food Services sector includes establishments providing customers with lodging and preparing meals, snacks, and beverages for immediate consumption. | 931,927 |
| 81 | NAICS 81 — Other Services (except Public Administration) The Other Services sector encompasses establishments performing a wide variety of services not classified elsewhere, including equipment repair and maintenance, personal services, religious activities, and civic organizations. | 1,955,493 |
| 92 | NAICS 92 — Public Administration The Public Administration sector encompasses federal, state, and local government agencies that administer, oversee, and manage public programs. | 256,211 |
Comparison
NAICS vs SIC: what's the difference?
SIC (Standard Industrial Classification)was created in 1937 and used by US federal agencies until NAICS replaced it in 1997. SIC organises the economy into just 11 major divisions using a fixed four-digit code — a structure that predates the rise of service industries and technology businesses. Many modern industries were forced into catch-all “not elsewhere classified” categories.
NAICS was purpose-built to solve those limitations. It expands to 20 sectors, introduces dedicated classifications for information technology, professional services, and healthcare, and shares a common 5-digit structure across the US, Canada, and Mexico. The SEC still classifies public companies by SIC code in EDGAR filings, so both systems remain in practical use.
Full guide: SIC vs NAICS — Key Differences| NAICS | SIC | |
|---|---|---|
| Created | 1997 (revised 2022) | 1937 |
| Top-level groups | 20 sectors | 11 divisions |
| Code length | 2–6 digits | 4 digits |
| Geographic scope | US, Canada, Mexico | US only (original) |
| US federal stats | Primary standard | Replaced by NAICS |
| SEC / EDGAR | Not used | Still active |
FAQ
Frequently asked questions about NAICS codes
NAICS 2022 contains 20 two-digit sectors, 99 three-digit subsectors, 323 four-digit industry groups, 710 five-digit NAICS industries, and approximately 1,012 six-digit national industries. The exact count at the 6-digit level varies slightly between the US, Canada, and Mexico because each country uses country-specific sixth digits.
NAICS 2022 is the current revision of the North American Industry Classification System, effective from January 1, 2022. It introduced updates across multiple sectors — most notably in information technology, healthcare, and professional services — to better reflect how modern businesses operate. NAICS is revised on a roughly five-year cycle; NAICS 2022 followed NAICS 2017.
The first five digits of a NAICS code are identical across the United States, Canada, and Mexico. The sixth digit, however, is country-specific: it allows each country to subdivide industries to reflect national distinctions. So NAICS 54151 means the same industry in all three countries, while 541511 is a US-only sub-classification.
NAICS is revised approximately every five years, aligning with the US Economic Census cycle. Past revisions: 1997 (original), 2002, 2007, 2012, 2017, and 2022. Each revision captures structural shifts in the economy — for example, the 2002 revision added dedicated categories for information technology businesses that barely existed when SIC was designed.
SIC (Standard Industrial Classification) was created in 1937 and used by US federal agencies until NAICS replaced it in 1997. NAICS has 20 sectors versus SIC's 11 divisions, covers modern service industries far better, and shares a common structure across the US, Canada, and Mexico. The SEC still uses SIC codes in EDGAR filings today.
Use the search bar at the top of this page — type a keyword describing your business activity or enter a partial code. Browse the results and drill down through the hierarchy: sector → subsector → industry group → 5-digit industry. For federal contracting (SAM.gov), you self-select your primary NAICS code at registration.
Yes. Businesses can hold one primary NAICS code — the code reflecting the activity that generates the most revenue — plus any number of secondary codes for additional lines of business. In B2B databases, secondary codes allow a company to appear in searches for all its activities.
Right here. The InfobelPRO NAICS code lookup covers all 20 NAICS 2022 sectors down to the 5-digit industry level, with entity counts for 17.7 million US businesses. Use the search bar at the top of this page or browse by sector.
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