Industry Classification Hubs
The Industry Classification Hubs group all SIC and NAICS codes into 19 major industry categories using the numeric hierarchy of the classification systems. These hubs provide a structured, top-level view of the U.S. economy and act as parent categories for more than 20,000 code detail pages across SICCODE.com.
Each hub includes expanded descriptions, subsector coverage, and direct links to relevant SIC and NAICS codes. This structure improves navigation and helps users understand how industries relate within the broader economic taxonomy.
For applied guidance and cross-topic references, see the Industry Intelligence Center.
Explore All Industry Classification Hubs
Interactive map: Select a sector to open its hub page. Each node includes SIC/NAICS ranges for fast numeric context.
Agriculture, Forestry, Fishing & Hunting
SIC: 01–09 | NAICS: 11
Covers crop production, livestock, timber operations, aquaculture, and agricultural support activities. This sector spans both large commercial producers and smaller specialized operations that supply essential inputs to the food, fiber, and natural resource economy.
View the Agriculture Hub Open Agriculture hub pageMining, Quarrying & Oil/Gas Extraction
SIC: 10–14 | NAICS: 21
Includes mineral extraction, drilling operations, crude petroleum production, natural gas extraction, and quarrying. These industries supply foundational materials for construction, energy, and manufacturing and operate under strict environmental and safety regulations.
View the Mining Hub Open Mining hub pageUtilities
SIC: 46, 49 | NAICS: 22
Encompasses electric power generation, transmission, distribution, natural gas delivery, and water systems. These highly regulated industries maintain essential infrastructure supporting homes, businesses, and industrial operations.
View the Utilities Hub Open Utilities hub pageConstruction
SIC: 15–17 | NAICS: 23
Covers residential, commercial, industrial, and infrastructure construction, as well as specialty trades such as electrical, plumbing, roofing, and HVAC. These industries build and maintain the physical environment and require licensing, compliance, and permitting.
View the Construction Hub Open Construction hub pageManufacturing
SIC: 20–39 | NAICS: 31–33
Includes food processing, chemicals, plastics, metals, machinery, electronics, and advanced manufacturing. These industries transform raw materials into finished goods and support exports, logistics, and industrial supply chains.
View the Manufacturing Hub Open Manufacturing hub pageWholesale Trade
SIC: 50–51 | NAICS: 42
Wholesale distributors that buy, store, and resell durable and nondurable goods to retailers, contractors, and B2B customers. This sector plays a critical intermediary role across all supply chains.
View the Wholesale Hub Open Wholesale hub pageRetail Trade
SIC: 52–57, 59 | NAICS: 44–45
Retailers selling goods directly to consumers through stores, e-commerce, and specialty shops. Industries include apparel, food, automotive, home goods, and general merchandise.
View the Retail Hub Open Retail hub pageTransportation & Warehousing
SIC: 40–45, 47 | NAICS: 48–49
Freight carriers, logistics providers, distribution centers, storage facilities, and related support activities. This sector moves goods across domestic and global supply chains.
View the Transportation Hub Open Transportation hub pageInformation
SIC: 27, 48, 73 (partial) | NAICS: 51
Includes publishing, broadcasting, telecommunications, data processing, hosting, and digital media. These industries manage the creation, distribution, and transmission of information across platforms.
View the Information Hub Open Information hub pageFinance & Insurance
SIC: 60–64, 66 | NAICS: 52
Banking, lending, investment services, insurance carriers, and financial intermediaries. These industries manage risk, capital, and financial assets within the economy.
View the Finance Hub Open Finance hub pageReal Estate, Rental & Leasing
SIC: 65, 67 | NAICS: 53
Property managers, leasing companies, real estate agencies, and asset holding firms. These industries support real property transactions and rental markets for both consumers and businesses.
View the Real Estate Hub Open Real Estate hub pageProfessional, Scientific & Technical Services
SIC: 73 (partial), 87 (majority) | NAICS: 54
Specialized service providers such as legal, engineering, accounting, research, design, consulting, and scientific laboratories. These industries form the backbone of the knowledge economy.
View the Professional Services Hub Open Professional Services hub pageAdministrative & Waste Management Services
SIC: 73 (partial), 87 (partial), 88 | NAICS: 56
Employment services, facilities support, custodial work, landscaping, waste management, and remediation. These industries support day-to-day business operations and environmental compliance.
View the Administrative Services Hub Open Administrative Services hub pageEducational Services
SIC: 82 | NAICS: 61
Schools, colleges, universities, technical institutes, tutoring centers, and educational programs providing academic and vocational training.
View the Education Hub Open Education hub pageHealthcare & Social Assistance
SIC: 80, 83, 86 | NAICS: 62
Medical providers, hospitals, clinics, nursing care, social programs, and wellness organizations serving individuals and communities.
View the Healthcare Hub Open Healthcare hub pageArts, Entertainment & Recreation
SIC: 79 | NAICS: 71
Performing arts groups, spectator sports, amusement parks, museums, fitness centers, and recreational facilities. These industries support culture, entertainment, and tourism.
View the Arts & Recreation Hub Open Arts and Recreation hub pageAccommodation & Food Services
SIC: 58, 70 | NAICS: 72
Restaurants, bars, caterers, hotels, motels, and lodging services. These industries support hospitality, dining, and regional tourism economies.
View the Accommodation & Food Hub Open Accommodation and Food hub pageOther Services (Except Public Administration)
SIC: 72, 75, 76, 78, 81, 84, 86, 88, 89 | NAICS: 81
Personal services, repair shops, nonprofits, religious organizations, civic groups, and community support providers. These industries deliver miscellaneous services not classified elsewhere.
View the Other Services Hub Open Other Services hub pagePublic Administration
SIC: 91–99 | NAICS: 92
Federal, state, and local government agencies responsible for regulation, public safety, administration, and governance. These industries deliver public services and enforce policy.
View the Public Administration Hub Open Public Administration hub pageFrequently Asked Questions
What are Industry Classification Hubs?
Industry Classification Hubs organize all SIC and NAICS codes into 19 major industry groups. Each hub represents a broad sector of the economy—such as Manufacturing, Retail, or Healthcare—and connects to all the detailed codes within that sector.
How do SIC and NAICS codes relate to these hubs?
Each hub corresponds to a specific range of SIC and NAICS codes based on the numeric hierarchy of the two systems. Any code that falls within those ranges is part of that industry sector.
Why are these hubs useful?
They help users navigate thousands of codes by providing a clear, structured view of broader industry categories. This makes it easier to understand relationships between industries, compare sectors, or locate the correct code when only the general industry is known.
How do I find the correct SIC or NAICS code for a business?
If you know the general industry, you can start by browsing the relevant hub.
If you're unsure or need confirmation, use our expert-supported lookup service:
Get Your Verified SIC/NAICS Code
Where can I learn more about these classifications?
Use these references for methodology, review process, and trust signals:
Authority & Trust Hub
Classification Methodology
Industry Classification Review Team
Citations & Academic Recognition
Industry Intelligence Center