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NAICS Code Search & Industry Directory

NAICS (North American Industry Classification System) codes classify businesses by industry. Government agencies use NAICS codes to identify the types of businesses eligible for contracts, analyze industries, and organize procurement opportunities.

Search NAICS Codes

Why NAICS Codes Matter in Government Contracting

NAICS codes classify businesses by industry and are commonly used in government contracting. While not every government solicitation includes a NAICS code, many federal, state, and local procurement opportunities use NAICS codes to identify the industry associated with the procurement.

  • Find relevant bid opportunities
  • Identify the industries associated with a solicitation
  • Determine applicable SBA size standards
  • Improve bid searches and bid alerts
  • Discover related government contracts

NAICS vs. FSC Codes

NAICS and FSC codes serve different purposes in government contracting. NAICS codes classify businesses by industry, while Federal Supply Classification (FSC) codes, commonly referred to today as Product Service Codes (PSC), classify the products and services purchased by government agencies. Understanding both systems can help vendors find more relevant contract opportunities.

NAICS Code FSC Code
Identifies the vendor's industry Identifies the product or service being purchased
Used for business classification Used for procurement classification
Determines applicable business size standards Categorizes government purchases
Example: 541511 — Custom Computer Programming Services Example: D302 — IT Systems Development Services

Browse NAICS Categories

Browse the complete NAICS hierarchy, from two-digit sectors to detailed six-digit industry classifications. Expand each level to explore related industries and identify the NAICS codes that best describe your business.